A298668 - cp's OEIS frontend

A298668 Number T(n,k) of set partitions of [n] into k blocks such that the absolute difference between least elements of consecutive blocks is always > 1; triangle T(n,k), n>=0, 0<=k<=ceiling(n/2), read by rows.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	0
6	1
7	1
8	0
9	1
10	3
11	0
12	1
13	7
14	2
15	0
16	1
17	15
18	12
19	0
20	1
21	31
22	50
23	6
24	0
25	1
26	63
27	180
28	60
29	0
30	1
31	127
32	602
33	390
34	24
35	0
36	1
37	255
38	1932
39	2100
40	360
41	0
42	1
43	511
44	6050
45	10206
46	3360
47	120
48	0
49	1
50	1023
51	18660
52	46620
53	25200
54	2520
55	0
56	1
57	2047
58	57002
59	204630
60	166824
61	31920
62	720

[1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 3, 0, 1, 7, 2, 0, 1, 15, 12, 0, 1, 31, 50, 6, 0, 1, 63, 180, 60, 0, 1, 127, 602, 390, 24, 0, 1, 255, 1932, 2100, 360, 0, 1, 511, 6050, 10206, 3360, 120, 0, 1, 1023, 18660, 46620, 25200, 2520, 0, 1, 2047, 57002, 204630, 166824, 31920, 720]

cp's OEIS Frontend

A298668 Number T(n,k) of set partitions of [n] into k blocks such that the absolute difference between least elements of consecutive blocks is always > 1; triangle T(n,k), n>=0, 0<=k<=ceiling(n/2), read by rows.

Table of values

List of values