A026111 - 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

A026111

a(n) = T(2n-1,n), where T is the array defined in A026105.

3, 16, 89, 496, 2795, 15884, 90909, 523312, 3026850, 17577660, 102425257, 598575368, 3506930635, 20591787300, 121145018325, 713948286528, 4214030403902, 24907512574608, 147403116947718

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

OFFSET

2,1

LINKS

Table of n, a(n) for n=2..20.

CROSSREFS

Sequence in context: A356402 A378334 A347930 * A026330 A146963 A074562

Adjacent sequences: A026108 A026109 A026110 * A026112 A026113 A026114

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved