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A083307
a(n) = (4*n^n + (n-10)^n)/5.
2
1, -1, 16, -47, 464, 1875, 38144, 658397, 13421824, 309936391, 8000000000, 228249336489, 7132880359424, 242300085592667, 8889605514133504, 350315118408203125, 14757395823189622784, 661792256035172208783, 31477130063116931956736
OFFSET
0,3
LINKS
PROG
(Magma) [(4*n^n+(n-10)^n)/5: n in [0..25]]; // Vincenzo Librandi, Jun 29 2011
(PARI) a(n)=(4*n^n+(n-10)^n)/5 \\ Charles R Greathouse IV, Jun 29 2011
CROSSREFS
Cf. A083308.
Sequence in context: A233063 A208634 A333602 * A235765 A235548 A223440
KEYWORD
easy,sign
AUTHOR
Paul Barry, Apr 24 2003
STATUS
approved