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A259331
Ceiling of ((2^n)!)/(4^n*2^(2*n^2)).
1
1, 1, 1, 20, 228229620041151627, 6559900643155884106407005800995037605507731066841784640626478359
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OFFSET
1,4
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]
MAPLE
f:=n->((2^n)!)/(4^n*2^(2*n^2));
[seq(ceil(f(n)), n=1..6)];
CROSSREFS
Cf.
A259326
,
A259327
,
A259328
,
A259329
,
A259330
.
Sequence in context:
A172834
A271976
A182370
*
A364863
A209614
A167263
Adjacent sequences:
A259328
A259329
A259330
*
A259332
A259333
A259334
KEYWORD
nonn
AUTHOR
N. J. A. Sloane
, Jun 24 2015
STATUS
approved
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Last modified May 16 17:27 EDT 2024. Contains 372554 sequences. (Running on oeis4.)