|
Search: id:A082453
|
|
| |
|
| 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
EXAMPLE
|
First two missing odd numbers are 45 and 75; missing terms are in A082452.
|
|
MATHEMATICA
|
di[x_] := Apply[LCM, Divisors[x]+1] (*A066715=*)t1=Table[GCD[2*n+1, DivisorSigma[1, 2*n+1]], {n, 1, 2048}]; (*A082457=*)t2=Table[GCD[2*w+1, di[1+2*w]], {w, 1, 2048}]; (*A083344=*)t3=t2-t1; (*A082453=*)1+2*Flatten[Position[Abs[Sign[t3]], 0]];
|
|
CROSSREFS
|
Cf. A057643, A066715, A000203, A082457, A083344.
Sequence in context: A060747 A089684 A105356 this_sequence A033041 A077797 A033039
Adjacent sequences: A082450 A082451 A082452 this_sequence A082454 A082455 A082456
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Apr 25 2003
|
|
|
Search completed in 0.002 seconds
|
