A328821 - cp's OEIS frontend

A328821 Triangular array read by rows. Let P be the poset of all even sized subsets of [2n] ordered by inclusion. T(n,k) is the number of intervals in P with length k, 0<=k<=n, n>=0.

n	a(n)
0	1
1	2
2	1
3	8
4	12
5	1
6	32
7	120
8	30
9	1
10	128
11	896
12	560
13	56
14	1
15	512
16	5760
17	6720
18	1680
19	90
20	1
21	2048
22	33792
23	63360
24	29568
25	3960
26	132
27	1
28	8192
29	186368
30	512512
31	384384
32	96096
33	8008
34	182
35	1
36	32768
37	983040
38	3727360
39	4100096
40	1647360
41	256256
42	14560
43	240
44	1

[1, 2, 1, 8, 12, 1, 32, 120, 30, 1, 128, 896, 560, 56, 1, 512, 5760, 6720, 1680, 90, 1, 2048, 33792, 63360, 29568, 3960, 132, 1, 8192, 186368, 512512, 384384, 96096, 8008, 182, 1, 32768, 983040, 3727360, 4100096, 1647360, 256256, 14560, 240, 1]

cp's OEIS Frontend

A328821 Triangular array read by rows. Let P be the poset of all even sized subsets of [2n] ordered by inclusion. T(n,k) is the number of intervals in P with length k, 0<=k<=n, n>=0.

Table of values

List of values