A054138 T(n,4), array T as in A054134.

2, 10, 48, 180, 570, 1602, 4128, 9972, 22947, 50899, 109806, 231988, 482540, 992212, 2023184, 4100632, 8275877, 16652701, 33439998, 67057096, 134344422, 268984854, 538346448, 1077167916, 2154929607, 4310595495

Offset: 4

Author

Clark Kimberling

Keywords

• nonn

Links

• Index entries for linear recurrences with constant coefficients, signature (9, -35, 77, -105, 91, -49, 15, -2).