A158138 - cp's OEIS frontend

A158138 Number of nondecreasing integer sequences of length 4 with sum zero and sum of absolute values 2n.

n	a(n)
1	1
2	4
3	6
4	11
5	13
6	22
7	24
8	35
9	39
10	52
11	56
12	73
13	77
14	96
15	102
16	123
17	129
18	154
19	160
20	187
21	195
22	224
23	232
24	265
25	273
26	308
27	318
28	355
29	365
30	406
31	416
32	459
33	471
34	516
35	528
36	577
37	589
38	640
39	654
40	707
41	721
42	778
43	792
44	851
45	867
46	928
47	944
48	1009
49	1025
50	1092
51	1110
52	1179
53	1197
54	1270
55	1288

[1, 4, 6, 11, 13, 22, 24, 35, 39, 52, 56, 73, 77, 96, 102, 123, 129, 154, 160, 187, 195, 224, 232, 265, 273, 308, 318, 355, 365, 406, 416, 459, 471, 516, 528, 577, 589, 640, 654, 707, 721, 778, 792, 851, 867, 928, 944, 1009, 1025, 1092, 1110, 1179, 1197, 1270, 1288]

cp's OEIS Frontend

A158138 Number of nondecreasing integer sequences of length 4 with sum zero and sum of absolute values 2n.

Table of values

List of values