A083304 a(n) = (4*(n+5)^n + n^n)/5.

1, 5, 40, 415, 5300, 80625, 1426580, 28830155, 655940020, 16606321525, 463320312500, 14130811169655, 467881009873460, 16718946913855385, 641427749991418900, 26301978778076171875, 1148144301008330172980

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..300

Prog

(Magma) [(4*(n+5)^n+n^n)/5: n in [0..25]]; // Vincenzo Librandi, Jun 29 2011
(PARI) a(n)=(4*(n+5)^n+n^n)/5 \\ Charles R Greathouse IV, Jun 29 2011

Crossrefs

Cf. A000312, A083305, A083306.

Sequence in context: A143437 A306029 A243671 * A208248 A290932 A258172

Adjacent sequences: A083301 A083302 A083303 * A083305 A083306 A083307

Keyword

easy,nonn

Author

Paul Barry, Apr 24 2003

Status

approved