A211920 - cp's OEIS frontend

A211920 Number of (w,x,y,z) with all terms in {1,...,n} and 2wx<3yz.

n	a(n)
0	0
1	1
2	11
3	50
4	160
5	387
6	792
7	1480
8	2511
9	4001
10	6104
11	8943
12	12623
13	17396
14	23374
15	30765
16	39803
17	50707
18	63656
19	79050
20	96985
21	117795
22	141871
23	169444
24	200754
25	236327
26	276397
27	321322
28	371547
29	427471
30	489342
31	557906
32	633285
33	716040
34	806754

[0, 1, 11, 50, 160, 387, 792, 1480, 2511, 4001, 6104, 8943, 12623, 17396, 23374, 30765, 39803, 50707, 63656, 79050, 96985, 117795, 141871, 169444, 200754, 236327, 276397, 321322, 371547, 427471, 489342, 557906, 633285, 716040, 806754]

cp's OEIS Frontend

A211920 Number of (w,x,y,z) with all terms in {1,...,n} and 2wx<3yz.

Table of values

List of values

cp's OEIS Frontend

A211920 Number of (w,x,y,z) with all terms in {1,...,n} and 2*w*x<3*y*z.

Table of values

List of values

A211920 Number of (w,x,y,z) with all terms in {1,...,n} and 2wx<3yz.