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A083727
a(n) = n * (2^n - 8).
0
0, -6, -8, 0, 32, 120, 336, 840, 1984, 4536, 10160, 22440, 49056, 106392, 229264, 491400, 1048448, 2228088, 4718448, 9961320, 20971360, 44040024, 92274512, 192937800, 402652992, 838860600, 1744830256, 3623878440, 7516192544, 15569256216, 32212254480, 66571992840
OFFSET
0,2
CROSSREFS
Sequence in context: A021599 A072553 A089991 * A111838 A197479 A154513
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jun 16 2003
STATUS
approved