A212522 - cp's OEIS frontend

A212522 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	4
5	12
6	27
7	60
8	112
9	180
10	300
11	450
12	648
13	924
14	1274
15	1680
16	2240
17	2880
18	3645
19	4590
20	5700
21	6930
22	8470
23	10164
24	12096
25	14352
26	16900
27	19656
28	22932
29	26460
30	30375
31	34800
32	39680
33	44880
34	50864
35	57222
36	64152
37	71820
38	80142
39	88920
40	98800
41	109200
42	120393

[0, 0, 0, 0, 4, 12, 27, 60, 112, 180, 300, 450, 648, 924, 1274, 1680, 2240, 2880, 3645, 4590, 5700, 6930, 8470, 10164, 12096, 14352, 16900, 19656, 22932, 26460, 30375, 34800, 39680, 44880, 50864, 57222, 64152, 71820, 80142, 88920, 98800, 109200, 120393]

cp's OEIS Frontend

A212522 Number of (w,x,y,z) with all terms in {1,...,n} and w>=2x and y>3z.

Table of values

List of values