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A054138
T(n,4), array T as in A054134.
0
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
4,1
CROSSREFS
Sequence in context: A009314 A009316 A116194 * A192696 A181296 A239073
KEYWORD
nonn
STATUS
approved