A212055 - cp's OEIS frontend

A212055 Number of (w,x,y,z) with all terms in {1,...,n} and wx<=yz+2.

n	a(n)
0	0
1	1
2	15
3	62
4	176
5	395
6	775
7	1382
8	2296
9	3595
10	5407
11	7822
12	10968
13	14995
14	20063
15	26286
16	33896
17	43043
18	53951
19	66798
20	81832
21	99251
22	119375
23	142382
24	168592
25	198251
26	231711
27	269190
28	311088
29	357675
30	409367
31	466422
32	529296
33	598267
34	673855

[0, 1, 15, 62, 176, 395, 775, 1382, 2296, 3595, 5407, 7822, 10968, 14995, 20063, 26286, 33896, 43043, 53951, 66798, 81832, 99251, 119375, 142382, 168592, 198251, 231711, 269190, 311088, 357675, 409367, 466422, 529296, 598267, 673855]

cp's OEIS Frontend

A212055 Number of (w,x,y,z) with all terms in {1,...,n} and wx<=yz+2.

Table of values

List of values

cp's OEIS Frontend

A212055 Number of (w,x,y,z) with all terms in {1,...,n} and w*x<=y*z+2.

Table of values

List of values

A212055 Number of (w,x,y,z) with all terms in {1,...,n} and wx<=yz+2.