A188122 - cp's OEIS frontend

A188122 Table read by downward antidiagonals: T(n,k) is the number of strictly increasing arrangements of n nonzero numbers in -(n+k-2)..(n+k-2) with sum zero.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	0
8	3
9	2
10	3
11	0
12	4
13	4
14	8
15	4
16	0
17	5
18	8
19	16
20	16
21	16
22	0
23	6
24	12
25	31
26	42
27	52
28	42
29	0
30	7
31	18
32	51
33	90
34	137
35	152
36	137
37	0
38	8
39	24
40	80
41	172
42	308
43	426
44	484
45	426
46	0
47	9
48	32
49	118
50	296
51	624
52	1032
53	1398
54	1536
55	1398
56	0
57	10
58	40
59	167
60	482
61	1154
62	2216
63	3528
64	4622
65	5064
66	4622
67	0
68	11
69	50

[0, 0, 1, 0, 2, 0, 0, 3, 2, 3, 0, 4, 4, 8, 4, 0, 5, 8, 16, 16, 16, 0, 6, 12, 31, 42, 52, 42, 0, 7, 18, 51, 90, 137, 152, 137, 0, 8, 24, 80, 172, 308, 426, 484, 426, 0, 9, 32, 118, 296, 624, 1032, 1398, 1536, 1398, 0, 10, 40, 167, 482, 1154, 2216, 3528, 4622, 5064, 4622, 0, 11, 50]

cp's OEIS Frontend

A188122 Table read by downward antidiagonals: T(n,k) is the number of strictly increasing arrangements of n nonzero numbers in -(n+k-2)..(n+k-2) with sum zero.

Table of values

List of values