A212571 - cp's OEIS frontend

A212571 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	8
3	48
4	168
5	428
6	916
7	1728
8	2992
9	4840
10	7440
11	10960
12	15608
13	21588
14	29148
15	38528
16	50016
17	63888
18	80472
19	100080
20	123080
21	149820
22	180708
23	216128
24	256528
25	302328
26	354016
27	412048
28	476952
29	549220
30	629420
31	718080
32	815808
33	923168
34	1040808
35	1169328
36	1309416

[0, 0, 8, 48, 168, 428, 916, 1728, 2992, 4840, 7440, 10960, 15608, 21588, 29148, 38528, 50016, 63888, 80472, 100080, 123080, 149820, 180708, 216128, 256528, 302328, 354016, 412048, 476952, 549220, 629420, 718080, 815808, 923168, 1040808, 1169328, 1309416]

cp's OEIS Frontend

A212571 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