A211917 - cp's OEIS frontend

A211917 Number of (w,x,y,z) with all terms in {1,...,n} and wx<3y*z.

n	a(n)
0	0
1	1
2	15
3	67
4	210
5	507
6	1029
7	1904
8	3225
9	5123
10	7785
11	11368
12	16023
13	22035
14	29572
15	38867
16	50233
17	63931
18	80180
19	99459
20	121947
21	148024
22	178141
23	212635
24	251805
25	296268
26	346348
27	402462
28	465175
29	534990
30	612224
31	697732
32	791813
33	895043

[0, 1, 15, 67, 210, 507, 1029, 1904, 3225, 5123, 7785, 11368, 16023, 22035, 29572, 38867, 50233, 63931, 80180, 99459, 121947, 148024, 178141, 212635, 251805, 296268, 346348, 402462, 465175, 534990, 612224, 697732, 791813, 895043]

cp's OEIS Frontend

A211917 Number of (w,x,y,z) with all terms in {1,...,n} and wx<3y*z.

Table of values

List of values

cp's OEIS Frontend

A211917 Number of (w,x,y,z) with all terms in {1,...,n} and w*x<3*y*z.

Table of values

List of values

A211917 Number of (w,x,y,z) with all terms in {1,...,n} and wx<3y*z.