A200553 - cp's OEIS frontend

A200553 T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.

n	a(n)
1	4
2	14
3	14
4	30
5	76
6	26
7	52
8	200
9	280
10	72
11	80
12	446
13	1184
14	1240
15	142
16	114
17	836
18	3396
19	7254
20	4978
21	362
22	154
23	1368
24	7778
25	26850
26	43698
27	21626
28	778
29	200
30	2134
31	15476
32	75792
33	211374
34	266812
35	91058
36	1938
37	252
38	3140
39	27806
40	178834
41	737460
42	1689732
43	1639804

[4, 14, 14, 30, 76, 26, 52, 200, 280, 72, 80, 446, 1184, 1240, 142, 114, 836, 3396, 7254, 4978, 362, 154, 1368, 7778, 26850, 43698, 21626, 778, 200, 2134, 15476, 75792, 211374, 266812, 91058, 1938, 252, 3140, 27806, 178834, 737460, 1689732, 1639804]

cp's OEIS Frontend

A200553 T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero second differences.

Table of values

List of values