A188123 - cp's OEIS frontend

A188123 Number of strictly increasing arrangements of 4 nonzero numbers in -(n+2)..(n+2) with sum zero.

n	a(n)
0	1
1	3
2	8
3	16
4	31
5	51
6	80
7	118
8	167
9	227
10	302
11	390
12	495
13	617
14	758
15	918
16	1101
17	1305
18	1534
19	1788
20	2069
21	2377
22	2716
23	3084
24	3485
25	3919
26	4388
27	4892
28	5435
29	6015
30	6636
31	7298
32	8003
33	8751
34	9546
35	10386
36	11275
37	12213
38	13202
39	14242
40	15337
41	16485
42	17690
43	18952
44	20273
45	21653

[1, 3, 8, 16, 31, 51, 80, 118, 167, 227, 302, 390, 495, 617, 758, 918, 1101, 1305, 1534, 1788, 2069, 2377, 2716, 3084, 3485, 3919, 4388, 4892, 5435, 6015, 6636, 7298, 8003, 8751, 9546, 10386, 11275, 12213, 13202, 14242, 15337, 16485, 17690, 18952, 20273, 21653]

cp's OEIS Frontend

A188123 Number of strictly increasing arrangements of 4 nonzero numbers in -(n+2)..(n+2) with sum zero.

Table of values

List of values