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A014869 Numbers n such that n divides s(n), where s(1)=1, s(k)=19*s(k-1)+k. 0
1, 3, 9, 19, 27, 57, 81, 171, 243, 381, 513, 729, 1143, 1539, 2187, 3429, 4617, 4707, 6561, 7239, 10287, 13053, 13149, 13851, 14121, 19683, 21717, 30861, 39159, 39447, 41553, 42363, 48387, 59049, 65151 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..35.

MATHEMATICA

nxt[{n_, a_}]:={n+1, 19a+n+1}; Transpose[Select[NestList[nxt, {1, 1}, 70000], Divisible[Last[#], First[#]]&]][[1]] (* Harvey P. Dale, Jan 21 2015 *)

CROSSREFS

Sequence in context: A029464 A029479 A215803 * A018495 A143056 A294401

Adjacent sequences:  A014866 A014867 A014868 * A014870 A014871 A014872

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Olivier Gérard

STATUS

approved

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Last modified June 17 19:32 EDT 2021. Contains 345085 sequences. (Running on oeis4.)