(+1,-1)-matrices: see matrices, binary
(+1,0,-1)-matrices: see matrices, binary
(-1)-Sigma(n): see (-1)sigma(n)
(-1)-sigma(n): see (-1)sigma(n)
(-1)sigma(n): A049060 *
(-1)Sigma(n): see (-1)sigma(n)
(-1)sigma(n): see also A034094 , A034095 , A035479 , A057723 , A060640 , A126602 , A126690
(-1)^n: A033999 *
(0,1)-matrices: see matrices, binary
(2-rx)/(1-rx-sx^2): see Fibonacci numbers, generalized
0,1 then repeat: A000035
0^n: A000007
1's in binary expansion: A000120 *
1's sequence: A000012 *
1-factorizations, sequences related to (start):
1-factorizations: A000438 , A000474 , A000479 , A000528 , A055495
1/(1-rx-sx^2): see Fibonacci numbers, generalized
1/n , sequences related to decimal expansion of (start):
1/n, decimal expansion of: basic sequences: A114205 , A114206 , A036275 , A051626
1/n, decimal expansion of: see also A051628 , A016088 , A056055 , A007732
1/n, period of expansion of (in various bases): (1) A007732 * A007733 A007734 A007735 A007736 A007737 A007738 A007739 A007740 A051626 A036275 A048962
1/n, period of expansion of (in various bases): (2) A048997 A003060
1/p (p prime), number of cycles: A006556 *, A054471
1/p (p prime), period of decimal expansion =(p-1)/k: (1) A006883 A097443 A055628 A056157 A056210 A056211 A056212 A056213 A056214 A056215 A056216
1/p (p prime), period of decimal expansion =(p-1)/k: (2) A056217 A098680
1/p (p prime), period of decimal expansion of: A002371 * A048595 * A007138 A048596 A007498 A007615 A040017 A051627 A048963 A006559 A001913 A046107
1/p (p prime), sum of: A016088 , A046024
10*n^2 + 2: A005901 *
10-gonal numbers: A001107 *, A007585
10^n: A011557 *
11-gonal numbers: A051682
11-gonal pyramidal numbers: A007586
11-smooth numbers: A051038
111...111, primes of form: A004022 *, A004023 *
12-gonal numbers: A051624
12-gonal pyramidal numbers: A007587 *
13-gonal numbers: A051865
13-smooth numbers: A080197
14-dimensional lattices: A004535 , A047632
14-gonal numbers: A051866
15 puzzle: A087725
15-gonal numbers: A051867
16-gonal numbers: A051868
17-gonal numbers: A051869
17-smooth numbers: A080681
18-gonal numbers: A051870
19-gonal numbers: A051871
19-smooth numbers: A080682
196, trajectory of: A006960