A027501 - OEIS

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A027501

First diagonal of A027496.

1, 1, 4, 4, 45, 121680, 895412700, 765208749487, 23131167341635600, 1241298775946837183769648, 88337130010856531512760631670, 1708369803301228434760503165381979211286000 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	FORMULA	`Numerators of sequence a[ n, n ] in (a[ i, j ])^3 where a[ i, j ] = S(i, j)/BellNumber(i) if j<=i, 0 if j>i`
	CROSSREFS	`Sequence in context: A082794 A197933 A198005 * A189102 A009644 A196180` `Adjacent sequences: A027498 A027499 A027500 * A027502 A027503 A027504`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.