A047153 - 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

A047153

T(n,n-1), array T as in A047150.

1, 3, 8, 27, 90, 320, 1170, 4243, 15700, 58415, 219547, 831826, 3160495, 12062741, 46187360, 177436402, 683765925, 2640846975, 10221025773, 39630943814, 153924315307, 598776610777, 2332494389552, 9097468059843

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

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..24.

CROSSREFS

Sequence in context: A148839 A148840 A374570 * A281347 A000238 A259811

Adjacent sequences: A047150 A047151 A047152 * A047154 A047155 A047156

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved