A212577 - cp's OEIS frontend

A212577 Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|=2|x-y|-|y-z|.

n	a(n)
0	0
1	1
2	4
3	17
4	46
5	89
6	154
7	251
8	374
9	531
10	736
11	979
12	1268
13	1621
14	2024
15	2485
16	3026
17	3629
18	4302
19	5071
20	5914
21	6839
22	7876
23	8999
24	10216
25	11561
26	13004
27	14553
28	16246
29	18049
30	19970
31	22051
32	24254
33	26587
34	29096
35	31739
36	34524
37	37501
38	40624
39	43901

[0, 1, 4, 17, 46, 89, 154, 251, 374, 531, 736, 979, 1268, 1621, 2024, 2485, 3026, 3629, 4302, 5071, 5914, 6839, 7876, 8999, 10216, 11561, 13004, 14553, 16246, 18049, 19970, 22051, 24254, 26587, 29096, 31739, 34524, 37501, 40624, 43901]

cp's OEIS Frontend

A212577 Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|=2|x-y|-|y-z|.

Table of values

List of values