A046855 a(n) = Sum_{i=0..n} binomial(2^n-1, i).

1, 2, 7, 64, 1941, 206368, 75611761, 94790703104, 410032402903457, 6209873423645364736, 334295041653397160758401, 64833891274601856058512662528, 45812224321723327287804258678310401, 119028985004291580552833610988687896223744, 1145666652669402964793972560725343625287570503681

Offset

0,2

References

R. O. Winder, Enumeration of seven-argument threshold functions, IEEE Trans. Electron. Computers, 14 (1965), 315-.

Links

Table of n, a(n) for n=0..14.

Mathematica

Table[Sum[Binomial[2^n-1, i], {i, 0, n}], {n, 0, 20}] (* Harvey P. Dale, Apr 11 2012 *)

Crossrefs

Sequence in context: A011821 A366705 A117263 * A179043 A116985 A042051

Adjacent sequences: A046852 A046853 A046854 * A046856 A046857 A046858

Keyword

nonn

Author

N. J. A. Sloane

Status

approved