A025132 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A025132

a(n) = (1/2)*(3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,n)).

1, 12, 119, 1090, 9592, 82432, 697615, 5841606, 48541826, 401049352, 3298721384, 27037279984, 220976019552, 1801829443072, 14663530220175, 119138596786414, 966631388383438, 7833369734693512

(list; graph; refs; listen; history; text; internal format)

OFFSET

2,2

LINKS

Table of n, a(n) for n=2..19.

CROSSREFS

Sequence in context: A105218 A180777 A163950 * A001712 A285232 A077251

Adjacent sequences: A025129 A025130 A025131 * A025133 A025134 A025135

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved