A361001 - cp's OEIS frontend

A361001 Triangle read by rows: T(n,k) is the number of tilings of an n X k rectangle by integer-sided rectangular pieces that cannot be rearranged to produce a different tiling of the rectangle (except rotations and reflections of the original tiling), 1 <= k <= n.

n	a(n)
1	1
2	2
3	4
4	3
5	7
6	9
7	4
8	11
9	18
10	23
11	4
12	14
13	22
14	34
15	41
16	6
17	23
18	42
19	72
20	108

[1, 2, 4, 3, 7, 9, 4, 11, 18, 23, 4, 14, 22, 34, 41, 6, 23, 42, 72, 108]