A193344 - cp's OEIS frontend

A193344 Triangle read by rows: T(n,m) (n>=0, 1 <= m <= n+1) = number of unlabeled rigid interval posets with n non-maximal and m maximal elements.

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	2
6	2
7	9
8	13
9	6
10	5
11	32
12	72
13	69
14	24
15	16
16	132
17	409
18	605
19	432
20	120
21	61
22	623
23	2480
24	5016
25	5498
26	3120
27	720
28	271
29	3314
30	16222
31	41955
32	62626
33	54370
34	25560
35	5040
36	1372
37	19628
38	114594
39	363123
40	690935
41	814690
42	584580
43	234360
44	40320

[1, 1, 1, 1, 3, 2, 2, 9, 13, 6, 5, 32, 72, 69, 24, 16, 132, 409, 605, 432, 120, 61, 623, 2480, 5016, 5498, 3120, 720, 271, 3314, 16222, 41955, 62626, 54370, 25560, 5040, 1372, 19628, 114594, 363123, 690935, 814690, 584580, 234360, 40320]

cp's OEIS Frontend

A193344 Triangle read by rows: T(n,m) (n>=0, 1 <= m <= n+1) = number of unlabeled rigid interval posets with n non-maximal and m maximal elements.

Table of values

List of values