A396287 a(n) = a(n-1) + a(n-1)^4 with a(0)=1.

1, 2, 18, 104994, 121522844381309386290, 218087967243211343601293080693944220009283482715374120407628181429351990598196290

Offset

0,2

Links

Paolo Xausa, Table of n, a(n) for n = 0..6

Mathematica

NestList[# + #^4 &, 1, 6] (* Paolo Xausa, May 21 2026 *)

Prog

(PARI) a(n) = if(n==0, 1, a(n-1)+a(n-1)^4);

Crossrefs

Rows sum of A396277.

Cf. A074333.

Sequence in context: A120929 A349886 A007184 * A067765 A293242 A387842

Adjacent sequences: A396284 A396285 A396286 * A396288 A396289 A396290

Keyword

nonn,easy

Author

Seiichi Manyama, May 21 2026

Status

approved