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

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