A212902 - cp's OEIS frontend

A212902 Number of (w,x,y,z) with all terms in {0,...,n} and |w-x|<|x-y|<|y-z|.

n	a(n)
0	0
1	0
2	2
3	14
4	44
5	110
6	228
7	426
8	726
9	1168
10	1780
11	2612
12	3700
13	5104
14	6866
15	9058
16	11728
17	14958
18	18804
19	23358
20	28682
21	34880
22	42020
23	50216
24	59544
25	70128
26	82050
27	95446
28	110404
29	127070
30	145540
31	165970
32	188462
33	213184
34	240244
35	269820
36	302028

[0, 0, 2, 14, 44, 110, 228, 426, 726, 1168, 1780, 2612, 3700, 5104, 6866, 9058, 11728, 14958, 18804, 23358, 28682, 34880, 42020, 50216, 59544, 70128, 82050, 95446, 110404, 127070, 145540, 165970, 188462, 213184, 240244, 269820, 302028]

cp's OEIS Frontend

A212902 Number of (w,x,y,z) with all terms in {0,...,n} and |w-x|<|x-y|<|y-z|.

Table of values

List of values