A212676 - cp's OEIS frontend

A212676 Number of (w,x,y,z) with all terms in {1,...,n} and w+x=|x-y|+|y-z|.

n	a(n)
0	0
1	0
2	1
3	9
4	23
5	52
6	92
7	155
8	234
9	344
10	475
11	645
12	841
13	1084
14	1358
15	1687
16	2052
17	2480
18	2949
19	3489
20	4075
21	4740
22	5456
23	6259
24	7118
25	8072
26	9087
27	10205
28	11389
29	12684
30	14050
31	15535
32	17096
33	18784
34	20553
35	22457
36	24447
37	26580
38	28804
39	31179
40	33650

[0, 0, 1, 9, 23, 52, 92, 155, 234, 344, 475, 645, 841, 1084, 1358, 1687, 2052, 2480, 2949, 3489, 4075, 4740, 5456, 6259, 7118, 8072, 9087, 10205, 11389, 12684, 14050, 15535, 17096, 18784, 20553, 22457, 24447, 26580, 28804, 31179, 33650]

cp's OEIS Frontend

A212676 Number of (w,x,y,z) with all terms in {1,...,n} and w+x=|x-y|+|y-z|.

Table of values

List of values