A112489 Fourth column of triangle A112486 used for e.g.f.s of |Stirling1|=|A008275| diagonals.

15, 315, 4900, 70532, 1008980, 14777620, 224655816, 3568061640, 59371808496, 1035987707664, 18953413075584, 363290743698048, 7287692926408704, 152811506045431296, 3344880701417587200, 76327884878442508800

Offset

3,1

Links

Table of n, a(n) for n=3..18.

Formula

a(n)= A112486(n, 3), n>=3. a(0)=a(1)=a(2)=0.

a(n)= (n+3)*a(n-1) + (n+2)*A112488(n-1), n>=3, a(2):=0.

Example

4900 = a(5) = 8*315 + 7*340.

Crossrefs

Sequence in context: A347980 A359404 A289951 * A062757 A088913 A053102

Adjacent sequences: A112486 A112487 A112488 * A112490 A112491 A112492

Keyword

nonn,easy

Author

Wolfdieter Lang, Sep 12 2005

Status

approved