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A259327
Ceiling of ((2^n)!)/(4^n*(n!)^2).
2
1, 1, 18, 141891750, 17844701940490283892633600000, 59757436204078657410908164193971177467471236322918735173920946651136000000000000
OFFSET
1,3
LINKS
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: A115479 A144838 A013886 * A271975 A186729 A340650
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 24 2015
STATUS
approved