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A100103 2^(2*n)-(2*n). 0
1, 2, 12, 58, 248, 1014, 4084, 16370, 65520, 262126, 1048556, 4194282, 16777192, 67108838, 268435428, 1073741794, 4294967264, 17179869150, 68719476700, 274877906906, 1099511627736, 4398046511062, 17592186044372, 70368744177618 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

LINKS

Guo-Niu Han, Enumeration of Standard Puzzles

MAPLE

seq(2^(2*n)-(2*n), n=0..20);

seq(2^(2*n)-2*n, n=0..25); (Deutsch)

CROSSREFS

Bisection of A000325.

Sequence in context: A177782 A005038 A094780 * A054145 A001758 A037133

Adjacent sequences:  A100100 A100101 A100102 * A100104 A100105 A100106

KEYWORD

nonn,easy

AUTHOR

Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Dec 26 2004

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.