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A027498 First diagonal of A027495. 0
1, 1, 2, 2, 3, 156, 11310, 330629, 152089340, 643246654596, 35524062269891, 337477881082719102180, 109384291330500150829872420, 86955035326335082936056844350, 544579423437617936776185666967483770498, 1506261534148454000219791441278411835118056010820 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..16.

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: A246718 A177764 A339402 * A094877 A006560 A088251

Adjacent sequences:  A027495 A027496 A027497 * A027499 A027500 A027501

KEYWORD

nonn

AUTHOR

Olivier Gérard

EXTENSIONS

More terms from Sean A. Irvine, Nov 06 2019

STATUS

approved

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Last modified September 25 18:27 EDT 2022. Contains 356986 sequences. (Running on oeis4.)