A277086 - cp's OEIS frontend

A277086 Irregular triangle read by rows: T(n,k) = number of size k subsets of S_n with respect to the symmetries of the square.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	5
10	5
11	5
12	2
13	1
14	1
15	7
16	56
17	317
18	1524
19	5733
20	17728
21	44767
22	94427
23	166786
24	249624
25	316950
26	343424
27	316950
28	249624
29	166786
30	94427
31	44767
32	17728
33	5733
34	1524
35	317
36	56
37	7
38	1
39	1
40	23
41	1012
42	36125
43	1035496
44	23878229
45	456936220
46	7437730463

[1, 1, 1, 1, 1, 1, 1, 1, 2, 5, 5, 5, 2, 1, 1, 7, 56, 317, 1524, 5733, 17728, 44767, 94427, 166786, 249624, 316950, 343424, 316950, 249624, 166786, 94427, 44767, 17728, 5733, 1524, 317, 56, 7, 1, 1, 23, 1012, 36125, 1035496, 23878229, 456936220, 7437730463]

cp's OEIS Frontend

A277086 Irregular triangle read by rows: T(n,k) = number of size k subsets of S_n with respect to the symmetries of the square.

Table of values

List of values