A027498 - OEIS

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A027498

First diagonal of A027495.

1, 1, 2, 2, 3, 156, 11310, 330629, 152089340, 643246654596, 35524062269891, 337477881082719102180, 109384291330500150829872420, 86955035326335082936056844350 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	FORMULA	`Numerators of sequence a[ n, n ] in (a[ i, j ])^2 where a[ i, j ] = S(i, j)/BellNumber(i) if j<=i, 0 if j>i`
	CROSSREFS	`Sequence in context: A083113 A184847 A177764 * A094877 A006560 A088251` `Adjacent sequences: A027495 A027496 A027497 * A027499 A027500 A027501`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.