A151941 - OEIS

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A151941

2^(2^n)*( (2^(n-1))! )^2*binomial(2*n,n).

8, 384, 2949120, 7457942274048000, 473804945588441678165307763458048000000, 1180144503132859774172436967820251490293315957318932076130423256619673861908070400000000000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`The number of most-perfect magic squares of order 2^m where m>=2.` `The next term is too large to include here.`
	MAPLE	`f:=m->2^(2^m)( (2^(m-1))! )^2binomial(2*m, m);`
	CROSSREFS	`A subsequence of A151932. Cf. A051235.` `Sequence in context: A067624 A096204 A153836 * A085806 A042115 A159515` `Adjacent sequences: A151938 A151939 A151940 * A151942 A151943 A151944`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 12 2009, based on email from Reinhardt Wiewe.`

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Last modified February 15 18:22 EST 2012. Contains 205835 sequences.