A047142 T(n,n), array T as in A047140.

1, 2, 4, 10, 38, 142, 470, 1576, 5940, 22714, 83456, 305088, 1158606, 4456076, 16946498, 64189932, 246350606, 952607962, 3675557676, 14158562010, 54805236890, 213011072542, 828185178452, 3219077811678, 12537974366478

Offset

0,2

Links

Table of n, a(n) for n=0..24.

Crossrefs

Sequence in context: A002577 A076132 A371999 * A081080 A395025 A370070

Adjacent sequences: A047139 A047140 A047141 * A047143 A047144 A047145

Keyword

nonn

Author

Clark Kimberling

Status

approved