A075183 - OEIS

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A075183

One half of third column of triangle A075181.

2

1, 11, 105, 1020, 10500, 115920, 1375920, 17539200, 239500800, 3492720000, 54226972800, 893577484800, 15583119552000, 286816578048000, 5557616064000000, 113108602134528000, 2412627824775168000

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OFFSET

0,2

COMMENTS

Also one half of third diagonal of triangle A048594.

LINKS

Table of n, a(n) for n=0..16.

FORMULA

a(n) = A075181(n+3, 2)/2 = A048594(n+3, n+1)/2, n>=0.

a(n) = (n+1)!*S1(n+3, n+1)/2 with S1(n, m) := A008275(n, m) (Stirling1).

CROSSREFS

Cf. A008275, A048594, A075181.

Sequence in context: A377641 A099839 A287834 * A302925 A250416 A116011

Adjacent sequences: A075180 A075181 A075182 * A075184 A075185 A075186

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Sep 19 2002

STATUS

approved