A076572 a(0)=1 if n>0 a(n)=(-1)^(n+1)/(2n+1) * Sum_{k=0..n} 4^(4k)*B(2k)*C(2n+1,2k) where B(k) denotes the k-th Bernoulli number.

1, 43, 2099, 388663, 139467719, 81165563683, 69426732871739, 81922705364469103, 127490352997174502159, 252973121503691631872923, 623357309124524241322006979, 1867492959566204749744784303143

Offset: 0

Author

Benoit Cloitre, Oct 19 2002

Keywords

• nonn

Crossrefs

Cf. A076552.