A130018 Eigensequence of A053121.

1, 1, 1, 2, 4, 9, 22, 56, 152, 428, 1257, 3827, 12023, 38975, 129801, 443833, 1554849, 5572334, 20409121, 76283610, 290737945, 1128730320, 4460079331, 17924115817, 73207479057, 303691230784, 1278796858227, 5462983288161, 23664467118878, 103895077228910

Offset

0,4

Links

Table of n, a(n) for n=0..29.

Formula

a(n) = Sum_{k=0..n-1} A053121(n-1,k)*a(k) for n>0 with a(0)=1.

Crossrefs

Cf. A053121.

Sequence in context: A143017 A307575 A301362 * A352176 A322504 A099754

Adjacent sequences: A130015 A130016 A130017 * A130019 A130020 A130021

Keyword

nonn

Author

Philippe Deléham, Jun 16 2007

Extensions

More terms from Jason Yuen, Sep 20 2024

Status

approved