reachable configurations on circles: A005787
read n backwards: A004086
rebasing notation b[n]q: see A000695
Recaman's sequence : sequences related to (start):
Recaman's sequence : A005132 *
Recaman's sequence, addition steps: A057165
Recaman's sequence, condensed version: A119632
Recaman's sequence, heights: A064288 A064289 * A064290 A064291 A064292 A064293 A064294
Recaman's sequence, quotients and remainders: A065051 A065052
Recaman's sequence, records for a(n)/n: A064621 , A064622
Recaman's sequence, segments in: A064492 A065038 A065053
Recaman's sequence, simplified version: A008344 A046901
Recaman's sequence, steps to hit n: A057167 ; A064227 * and A064228 * (records)
Recaman's sequence, subtraction steps: A057166
Recaman's sequence, transforms based on: A064365 A022831 , A053461
Recaman's sequence, two-dimensional versions: A066201 A066202
Recaman's sequence, variations on: A008336 A064387 A064388 A064389 A063733 A065422 A066199 A066200 A066203 A066204
Recaman's sequence: see also: A064284 A064301 A064369 A064568 A064569 A064970 A065053 A065054 A065055 A065056
reciprocal of n, decimal expansion of: see 1/n
reciprocals of primes: see 1/p
rectangles, Latin, see Latin squares
rectilinear crossing number of complete graph: A014540
recurrences over rings: A005984
recurrences, of the form a(n) = k*a(n - 1) +/- a(n - 2), sequences related to (start):
recurrences, of the form a(0) = 2; a(1) = k; a(n) = k*a(n - 1) + a(n - 2): (1) A000032 A002203 A006497 A014448 A087130 A085447 A086902 A086594 A087798 A086927
recurrences, of the form a(0) = 2; a(1) = k; a(n) = k*a(n - 1) + a(n - 2): (2) A001946 A086928 A088316 A090300 A090301 A090305 A090306 A090307 A090308 A090309
recurrences, of the form a(0) = 2; a(1) = k; a(n) = k*a(n - 1) + a(n - 2): (3) A090310 A090313 A090314 A090316 A087281 A087287 A089772
recurrences, of the form a(0) = 2; a(1) = k; a(n) = k*a(n - 1) - a(n - 2): (1) A057079 (and A087204 ) A007395 A005248 A003500 A003501 A003499 A056854 A086903 A056918 A087799
recurrences, of the form a(0) = 2; a(1) = k; a(n) = k*a(n - 1) - a(n - 2): (2) A057076 A087800 A078363 A067902 A078365 A090727 A078367 A087215 A078369 A090728
recurrences, of the form a(0) = 2; a(1) = k; a(n) = k*a(n - 1) - a(n - 2): (3) A090729 A090730 A090731 A090732 A090733 A090247 A090248 A090249 A090251 A087265 A065705 A089775
reduced residue system: A070194
reduced totient function psi: A002322 *, A002174 *, A002396 *, A002616
refactorable numbers: A033950 *
reflection coefficients: A007179
regions formed by lines in plane: A000124 , A055503
regions formed by spheres in space: A046127 , A014206 , A059173 , A059174 , A059250
regions in regular polygon: see Poonen-Rubinstein paper
regular connected grpahs, see graphs, regular connected
regular n-gon with all diagonals drawn: see Poonen-Rubinstein paper
regular polyhedra, see: polyhedra, regular
regular polytopes, see: polytopes, regular
regular primes: see primes, regular
regular sequences: A003513