A014876 Numbers k that divide s(k), where s(1)=1, s(j)=25*s(j-1)+j.

1, 3, 5, 9, 15, 21, 25, 27, 45, 55, 63, 75, 81, 93, 105, 135, 147, 165, 171, 189, 225, 243, 275, 279, 315, 355, 405, 441, 465, 495, 513, 525, 567, 605, 609, 651, 675, 729, 735, 825, 837, 855, 903, 915, 945, 1029, 1065, 1155, 1197, 1215, 1265, 1323, 1395

Offset

1,2

Links

Harvey P. Dale, Table of n, a(n) for n = 1..500

Mathematica

nxt[{n_, a_}]:={n+1, 25a+n+1}; Flatten[Position[NestList[nxt, {1, 1}, 400], _?(Divisible[Last[#], First[#]]&), {1}, Heads->False]] (* Harvey P. Dale, Oct 15 2013 *)

Crossrefs

Sequence in context: A086748 A364561 A014957 * A045602 A029470 A323646

Adjacent sequences: A014873 A014874 A014875 * A014877 A014878 A014879

Keyword

nonn

Author

N. J. A. Sloane, Olivier Gérard

Status

approved