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A027507 First column of A027495. 0
1, 3, 27, 173, 2213, 1239065, 1178661599, 537440137205, 4498684093801517, 397866367316299082571, 521505356993412536753131, 132101530036167237378528466705275, 1271578712351105027090700191735899429869, 33189191375129970683761258266358875688948789 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

FORMULA

Numerators of sequence a[ 1, 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: A056361 A141442 A053932 * A297670 A220820 A241271

Adjacent sequences:  A027504 A027505 A027506 * A027508 A027509 A027510

KEYWORD

nonn

AUTHOR

Olivier Gérard

EXTENSIONS

More terms from Sean A. Irvine, Nov 06 2019

STATUS

approved

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Last modified September 30 17:12 EDT 2020. Contains 337440 sequences. (Running on oeis4.)