A212251 - cp's OEIS frontend

A212251 Number of (w,x,y,z) with all terms in {1,...,n} and 3w = x + y + z + n + 1.

n	a(n)
0	0
1	0
2	1
3	6
4	15
5	30
6	54
7	87
8	131
9	189
10	261
11	349
12	456
13	582
14	729
15	900
16	1095
17	1316
18	1566
19	1845
20	2155
21	2499
22	2877
23	3291
24	3744
25	4236
26	4769
27	5346
28	5967
29	6634
30	7350
31	8115
32	8931
33	9801
34	10725
35	11705
36	12744
37	13842
38	15001
39	16224
40	17511
41	18864
42	20286
43	21777
44	23339
45	24975

[0, 0, 1, 6, 15, 30, 54, 87, 131, 189, 261, 349, 456, 582, 729, 900, 1095, 1316, 1566, 1845, 2155, 2499, 2877, 3291, 3744, 4236, 4769, 5346, 5967, 6634, 7350, 8115, 8931, 9801, 10725, 11705, 12744, 13842, 15001, 16224, 17511, 18864, 20286, 21777, 23339, 24975]

cp's OEIS Frontend

A212251 Number of (w,x,y,z) with all terms in {1,...,n} and 3w = x + y + z + n + 1.

Table of values

List of values