A212506 - cp's OEIS frontend

A212506 Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<=2z.

n	a(n)
0	0
1	1
2	16
3	64
4	196
5	441
6	900
7	1600
8	2704
9	4225
10	6400
11	9216
12	12996
13	17689
14	23716
15	30976
16	40000
17	50625
18	63504
19	78400
20	96100
21	116281
22	139876
23	166464
24	197136
25	231361
26	270400
27	313600
28	362404
29	416025
30	476100
31	541696
32	614656
33	693889
34	781456

[0, 1, 16, 64, 196, 441, 900, 1600, 2704, 4225, 6400, 9216, 12996, 17689, 23716, 30976, 40000, 50625, 63504, 78400, 96100, 116281, 139876, 166464, 197136, 231361, 270400, 313600, 362404, 416025, 476100, 541696, 614656, 693889, 781456]

cp's OEIS Frontend

A212506 Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y<=2z.

Table of values

List of values