A259328 Ceiling of ((2^n)!)/(2^(n*(n-1))*Product((2^i-1)^2,i=1..n))

2, 1, 2, 51480, 2631645209144487019355, 312242081385925594286511113381220856098317029402428309504000000000000

Offset

1,1

Links

Table of n, a(n) for n=1..6.

C. S. Lorens, Invertible Boolean functions, IEEE Trans. Electron. Computers, EC-13 (1964), 529-541.

C. S. Lorens, Invertible Boolean functions, IEEE Trans. Electron. Computers, EC-13 (1964), 529-541. [Annotated scan of page 530 only]

Crossrefs

Sequence in context: A177438 A367762 A002431 * A202034 A323881 A062963

Adjacent sequences: A259325 A259326 A259327 * A259329 A259330 A259331

Keyword

nonn

Author

N. J. A. Sloane, Jun 24 2015

Status

approved