A212518 - cp's OEIS frontend

A212518 Number of (w,x,y,z) with all terms in {1,...,n} and w>2x and y>3z.

n	a(n)
0	0
1	0
2	0
3	0
4	2
5	8
6	18
7	45
8	84
9	144
10	240
11	375
12	540
13	792
14	1092
15	1470
16	1960
17	2560
18	3240
19	4131
20	5130
21	6300
22	7700
23	9317
24	11088
25	13248
26	15600
27	18252
28	21294
29	24696
30	28350
31	32625
32	37200
33	42240
34	47872
35	54043
36	60588
37	68040
38	75924
39	84474
40	93860
41	104000
42	114660
43	126567

[0, 0, 0, 0, 2, 8, 18, 45, 84, 144, 240, 375, 540, 792, 1092, 1470, 1960, 2560, 3240, 4131, 5130, 6300, 7700, 9317, 11088, 13248, 15600, 18252, 21294, 24696, 28350, 32625, 37200, 42240, 47872, 54043, 60588, 68040, 75924, 84474, 93860, 104000, 114660, 126567]

cp's OEIS Frontend

A212518 Number of (w,x,y,z) with all terms in {1,...,n} and w>2x and y>3z.

Table of values

List of values