A026899 - 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

A026899

T(2n+1,n+2), T given by A026780.

1, 6, 30, 144, 687, 3296, 15972, 78294, 388320, 1947910, 9875566, 50560246, 261177401, 1360112590, 7134802722, 37673830960, 200106632766, 1068539351340, 5733226876876, 30894846668416, 167137498306038, 907416216735816

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

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..22.

CROSSREFS

Sequence in context: A082134 A030192 A026376 * A135160 A276022 A046945

Adjacent sequences: A026896 A026897 A026898 * A026900 A026901 A026902

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved