A047023 T(n,n-1), array T given by A047020.

1, 1, 4, 5, 19, 66, 293, 1144, 4308, 17158, 67007, 258431, 1012299, 3955448, 15396192, 60225003, 235693679, 921621773, 3610690891, 14157362951, 55517613242, 217923561656, 856025426013, 3363897769426, 13227528604439

Offset

1,3

Links

Table of n, a(n) for n=1..25.

Crossrefs

Sequence in context: A041036 A041699 A154704 * A032319 A346060 A041255

Adjacent sequences: A047020 A047021 A047022 * A047024 A047025 A047026

Keyword

nonn

Author

Clark Kimberling

Status

approved