OFFSET
0,5
FORMULA
T(n,k) = 2^k * A022166(n-1,k).
EXAMPLE
Triangle begins:
1;
1, 0;
1, 2, 0;
1, 6, 4, 0;
1, 14, 28, 8, 0;
1, 30, 140, 120, 16, 0;
1, 62, 620, 1240, 496, 32, 0;
MATHEMATICA
Table[Table[Product[q^n - q^i, {i, 1, k}]/Product[q^k - q^i, {i, 0, k - 1}] /. q -> 2, {k, 0, n}], {n, 0, 9}] // Grid
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Geoffrey Critzer, Jul 07 2017
STATUS
approved