A212682 - cp's OEIS frontend

A212682 Number of (w,x,y,z) with all terms in {1,...,n} and |x-y|>=|y-z|.

n	a(n)
0	0
1	1
2	12
3	57
4	168
5	395
6	792
7	1435
8	2400
9	3789
10	5700
11	8261
12	11592
13	15847
14	21168
15	27735
16	35712
17	45305
18	56700
19	70129
20	85800
21	103971
22	124872
23	148787
24	175968
25	206725
26	241332
27	280125
28	323400
29	371519
30	424800
31	483631
32	548352
33	619377
34	697068

[0, 1, 12, 57, 168, 395, 792, 1435, 2400, 3789, 5700, 8261, 11592, 15847, 21168, 27735, 35712, 45305, 56700, 70129, 85800, 103971, 124872, 148787, 175968, 206725, 241332, 280125, 323400, 371519, 424800, 483631, 548352, 619377, 697068]

cp's OEIS Frontend

A212682 Number of (w,x,y,z) with all terms in {1,...,n} and |x-y|>=|y-z|.

Table of values

List of values