A211797 - cp's OEIS frontend

A211797 Number of 4-tuples (w,x,y,z) with all terms in {1,...,n} and wx>2y*z.

n	a(n)
0	0
1	0
2	1
3	15
4	55
5	156
6	338
7	666
8	1159
9	1905
10	2950
11	4399
12	6275
13	8748
14	11847
15	15721
16	20450
17	26228
18	33078
19	41271
20	50799
21	61947
22	74832
23	89674
24	106480
25	125659
26	147291
27	171618
28	198767
29	229139
30	262698
31	300007
32	340983
33	386100
34	435544
35	489598

[0, 0, 1, 15, 55, 156, 338, 666, 1159, 1905, 2950, 4399, 6275, 8748, 11847, 15721, 20450, 26228, 33078, 41271, 50799, 61947, 74832, 89674, 106480, 125659, 147291, 171618, 198767, 229139, 262698, 300007, 340983, 386100, 435544, 489598]

cp's OEIS Frontend

A211797 Number of 4-tuples (w,x,y,z) with all terms in {1,...,n} and wx>2y*z.

Table of values

List of values

cp's OEIS Frontend

A211797 Number of 4-tuples (w,x,y,z) with all terms in {1,...,n} and w*x>2*y*z.

Table of values

List of values

A211797 Number of 4-tuples (w,x,y,z) with all terms in {1,...,n} and wx>2y*z.