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A027525 First diagonal of A027518. 0
1, 1, 8, 54, 13500, 3087000, 3652264, 1157625, 456533, 166375, 4492125, 1728000, 394444512000, 240827600093696, 869479900246125, 384557787648000, 90468670208000, 83064482131968, 13819853214706176, 45242839158999552000, 22447962513858357000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..21.

FORMULA

Numerators of sequence a[n, n] in A=(b[i, j])^4 where b[i, j] = A008284(i, j) / Partitions(i) if j<=i, 0 if j>i.

CROSSREFS

Sequence in context: A241581 A052690 A304589 * A298654 A080312 A116885

Adjacent sequences:  A027522 A027523 A027524 * A027526 A027527 A027528

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)