A203470 - OEIS

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A203470

Vandermonde permanent of (2,3,4,...,n+1).

1, 5, 210, 105840, 838252800, 129459762432000, 466521199899955200000, 45727437650097816797184000000, 139352822480378029387123167068160000000, 14863555768518278744824500982673408262144000000000 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	COMMENTS	`Each term divides its successor, as (conjectured) in A102693. Each term is divisible by the corresponding superfactorial, A000178(n), as in A203471.`
	LINKS	`Table of n, a(n) for n=1..10.`
	MATHEMATICA	`f[j_] := j + 1; z = 16;` `v[n_] := Product[Product[f[k] + f[j], {j, 1, k - 1}], {k, 2, n}]` `d[n_] := Product[(i - 1)!, {i, 1, n}]` `Table[v[n], {n, 1, z}] (* A203470 )` `Table[v[n + 1]/v[n], {n, 1, z - 1}] ( A102693 ? )` `Table[v[n]/d[n], {n, 1, 20}] ( A203471 *)`
	CROSSREFS	`Cf. A102693, A203471.` `Sequence in context: A027682 A006413 A055316 * A165208 A144796 A206457` `Adjacent sequences: A203467 A203468 A203469 * A203471 A203472 A203473`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling, Jan 02 2012`
	STATUS	`approved`

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Last modified May 18 12:20 EDT 2013. Contains 225419 sequences.