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A137592 Duplicate of A098694. 2
1, 2, 48, 34560, 1393459200, 5056584744960000, 2422112183371431936000000, 211155601241022491077587763200000000, 4417964278440225627098723475313498521600000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Hankel transform of A112934(n+1). [From Paul Barry, Dec 04 2009]

LINKS

Table of n, a(n) for n=0..8.

FORMULA

a(n)=Product{k=0..n, (2(k+1)(2k+1))^(n-k)}; a(n)=A000178(n)*A057863(n)*A006125(n+1)=A121835(n)*A006125(n+1);

G.f.: G(0)/2, where G(k)= 1  + 1/(1 - 1/(1 + 1/(2*k+2)!/x/G(k+1))); (continued fraction). - Sergei N. Gladkovskii, Jun 14 2013

CROSSREFS

Sequence in context: A203311 A295177 A098694 * A203778 A203305 A191954

Adjacent sequences:  A137589 A137590 A137591 * A137593 A137594 A137595

KEYWORD

dead

AUTHOR

Paul Barry, Jan 28 2008

STATUS

approved

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Last modified October 19 17:02 EDT 2018. Contains 316372 sequences. (Running on oeis4.)