OFFSET
0,3
EXAMPLE
[0] 0
[1] 0, 2
[2] 4, 12, 12
[3] 30, 60, 60, 30
[4] 168, 280, 280, 168, 56
[5] 840, 1260, 1260, 840, 360, 90
[6] 3960, 5544, 5544, 3960, 1980, 660, 132
[7] 18018, 24024, 24024, 18018, 10010, 4004, 1092, 182
[8] 80080, 102960, 102960, 80080, 48048, 21840, 7280, 1680, 240
[9] 350064, 437580, 437580, 350064, 222768, 111384, 42840, 12240, 2448, 306
MAPLE
T := (n, k) -> (n - k + 2)*binomial(2*n, n + k - 2):
seq(seq(T(n, k), k=0..n), n=0..9);
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Mar 08 2021
STATUS
approved