A212512 - cp's OEIS frontend

A212512 Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<3z.

n	a(n)
0	0
1	1
2	16
3	64
4	196
5	462
6	930
7	1680
8	2860
9	4485
10	6800
11	9888
12	13908
13	19019
14	25564
15	33440
16	43200
17	54900
18	68796
19	85120
20	104470
21	126511
22	152218
23	181560
24	214896
25	252525
26	295360
27	342720
28	396116
29	455370
30	520950
31	593216
32	673456
33	760529
34	856596
35	961272
36	1075140

[0, 1, 16, 64, 196, 462, 930, 1680, 2860, 4485, 6800, 9888, 13908, 19019, 25564, 33440, 43200, 54900, 68796, 85120, 104470, 126511, 152218, 181560, 214896, 252525, 295360, 342720, 396116, 455370, 520950, 593216, 673456, 760529, 856596, 961272, 1075140]

cp's OEIS Frontend

A212512 Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<3z.

Table of values

List of values