A211795 - cp's OEIS frontend

A211795 Number of (w,x,y,z) with all terms in {1,...,n} and wx < 2y*z.

n	a(n)
0	0
1	1
2	11
3	58
4	177
5	437
6	894
7	1659
8	2813
9	4502
10	6836
11	10008
12	14121
13	19449
14	26117
15	34372
16	44422
17	56597
18	71044
19	88160
20	108115
21	131328
22	158074
23	188773
24	223604
25	263172
26	307719
27	357715
28	413493
29	475690
30	544480
31	620632
32	704381
33	796413

[0, 1, 11, 58, 177, 437, 894, 1659, 2813, 4502, 6836, 10008, 14121, 19449, 26117, 34372, 44422, 56597, 71044, 88160, 108115, 131328, 158074, 188773, 223604, 263172, 307719, 357715, 413493, 475690, 544480, 620632, 704381, 796413]

cp's OEIS Frontend

A211795 Number of (w,x,y,z) with all terms in {1,...,n} and wx < 2y*z.

Table of values

List of values

cp's OEIS Frontend

A211795 Number of (w,x,y,z) with all terms in {1,...,n} and w*x < 2*y*z.

Table of values

List of values

A211795 Number of (w,x,y,z) with all terms in {1,...,n} and wx < 2y*z.