A212519 - cp's OEIS frontend

A212519 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	1
4	4
5	12
6	30
7	63
8	108
9	192
10	300
11	450
12	660
13	936
14	1260
15	1715
16	2240
17	2880
18	3672
19	4617
20	5670
21	7000
22	8470
23	10164
24	12144
25	14400
26	16848
27	19773
28	22932
29	26460
30	30450
31	34875
32	39600
33	45056
34	50864
35	57222
36	64260
37	71928
38	80028
39	89167
40	98800
41	109200
42	120540

[0, 0, 0, 1, 4, 12, 30, 63, 108, 192, 300, 450, 660, 936, 1260, 1715, 2240, 2880, 3672, 4617, 5670, 7000, 8470, 10164, 12144, 14400, 16848, 19773, 22932, 26460, 30450, 34875, 39600, 45056, 50864, 57222, 64260, 71928, 80028, 89167, 98800, 109200, 120540]

cp's OEIS Frontend

A212519 Number of (w,x,y,z) with all terms in {1,...,n} and w>2x and y>=3z.

Table of values

List of values