A212514 - cp's OEIS frontend

A212514 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	14
5	42
6	90
7	200
8	364
9	585
10	960
11	1440
12	2052
13	2926
14	4004
15	5280
16	7000
17	9000
18	11340
19	14280
20	17670
21	21483
22	26180
23	31416
24	37296
25	44252
26	52000
27	60480
28	70434
29	81270
30	93150
31	106720
32	121520
33	137445
34	155584
35	175032
36	196020
37	219450
38	244644
39	271440
40	301340

[0, 0, 0, 0, 14, 42, 90, 200, 364, 585, 960, 1440, 2052, 2926, 4004, 5280, 7000, 9000, 11340, 14280, 17670, 21483, 26180, 31416, 37296, 44252, 52000, 60480, 70434, 81270, 93150, 106720, 121520, 137445, 155584, 175032, 196020, 219450, 244644, 271440, 301340]

cp's OEIS Frontend

A212514 Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y>3z.

Table of values

List of values