A212905 - cp's OEIS frontend

A212905 Number of (w,x,y,z) with all terms in {0,...,n} and |w-x|+|x-y+|y-z|=2n.

n	a(n)
0	1
1	6
2	16
3	26
4	42
5	58
6	82
7	106
8	140
9	174
10	220
11	266
12	326
13	386
14	462
15	538
16	632
17	726
18	840
19	954
20	1090
21	1226
22	1386
23	1546
24	1732
25	1918
26	2132
27	2346
28	2590
29	2834
30	3110
31	3386
32	3696
33	4006
34	4352
35	4698
36	5082
37	5466
38	5890
39	6314
40	6780
41	7246
42	7756
43	8266
44	8822

[1, 6, 16, 26, 42, 58, 82, 106, 140, 174, 220, 266, 326, 386, 462, 538, 632, 726, 840, 954, 1090, 1226, 1386, 1546, 1732, 1918, 2132, 2346, 2590, 2834, 3110, 3386, 3696, 4006, 4352, 4698, 5082, 5466, 5890, 6314, 6780, 7246, 7756, 8266, 8822]

cp's OEIS Frontend

A212905 Number of (w,x,y,z) with all terms in {0,...,n} and |w-x|+|x-y+|y-z|=2n.

Table of values

List of values