A014941 a(1)=1, a(n) = n*23^(n-1) + a(n-1).

1, 47, 1634, 50302, 1449507, 40067565, 1076318788, 28314922364, 733113789893, 18744640404523, 474436263754662, 11908153358721786, 296798270974985959, 7353307338085529321, 181245852206166776456, 4447409619636426706168

Offset

1,2

Links

Table of n, a(n) for n=1..16.

Index entries for linear recurrences with constant coefficients, signature (47,-575,529).

Formula

G.f.: x/((1 - x)*(1 - 23*x)^2). - Stefano Spezia, Mar 11 2020

Prog

(PARI) a(n) = (1+23^n*(22*n-1))/484; \\ Jinyuan Wang, Mar 11 2020

Crossrefs

Sequence in context: A142845 A202128 A278268 * A280707 A324433 A289984

Adjacent sequences: A014938 A014939 A014940 * A014942 A014943 A014944

Keyword

nonn,easy

Author

Olivier Gérard

Status

approved