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A144545
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a(n) = 2^(n*(n-1))*(2^n + 1)*Product_{i=1..n-1} (4^i - 1).
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1
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2, 3, 60, 25920, 197406720, 25015379558400, 51615733565620224000, 1718194449153210615595008000, 918817155086936330770931156779008000, 7877103854727828347931810809383874168094720000, 1081561598265935342583934931877242782978883444539392000000
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OFFSET
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0,1
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LINKS
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MAPLE
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g:=m->2^(m*(m-1))*mul( 4^i-1, i=1..m-1)*(2^m+1);
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PROG
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(Python)
from math import prod
def A144545(n): return ((1<<n)+1)*prod((1<<i)-1 for i in range(2, 2*n-1, 2)) << n*(n-1) # Chai Wah Wu, Jun 20 2022
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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