A271206 - cp's OEIS frontend

A271206 Number T(n,k) of set partitions of [n] having exactly k triples (t,t+1,t+2) such that t+i is in block b+i for some b; triangle T(n,k), n>=0, 0<=k<=max(0,n-2), read by rows.

n	a(n)
0	1
1	1
2	2
3	4
4	1
5	10
6	4
7	1
8	28
9	18
10	5
11	1
12	89
13	77
14	30
15	6
16	1
17	315
18	345
19	164
20	45
21	7
22	1
23	1233
24	1617
25	919
26	299
27	63
28	8
29	1
30	5285
31	8003
32	5262
33	2011
34	492
35	84
36	9
37	1
38	24583
39	41871
40	31180
41	13611
42	3857
43	754
44	108
45	10
46	1
47	123062
48	231474
49	191889
50	94020
51	30128
52	6755
53	1095
54	135
55	11
56	1

[1, 1, 2, 4, 1, 10, 4, 1, 28, 18, 5, 1, 89, 77, 30, 6, 1, 315, 345, 164, 45, 7, 1, 1233, 1617, 919, 299, 63, 8, 1, 5285, 8003, 5262, 2011, 492, 84, 9, 1, 24583, 41871, 31180, 13611, 3857, 754, 108, 10, 1, 123062, 231474, 191889, 94020, 30128, 6755, 1095, 135, 11, 1]

cp's OEIS Frontend

A271206 Number T(n,k) of set partitions of [n] having exactly k triples (t,t+1,t+2) such that t+i is in block b+i for some b; triangle T(n,k), n>=0, 0<=k<=max(0,n-2), read by rows.

Table of values

List of values