A047800 - cp's OEIS frontend

A047800 Number of different values of i^2 + j^2 for i,j in [0, n].

n	a(n)
0	1
1	3
2	6
3	10
4	15
5	20
6	27
7	34
8	42
9	51
10	61
11	71
12	83
13	94
14	106
15	120
16	135
17	148
18	165
19	180
20	198
21	216
22	235
23	252
24	273
25	294
26	315
27	337
28	360
29	382
30	408
31	431
32	457
33	484
34	508
35	536
36	567
37	595
38	624
39	653
40	687
41	715
42	749
43	781
44	813
45	850
46	884
47	919
48	957
49	993
50	1031
51	1069
52	1108
53	1142

[1, 3, 6, 10, 15, 20, 27, 34, 42, 51, 61, 71, 83, 94, 106, 120, 135, 148, 165, 180, 198, 216, 235, 252, 273, 294, 315, 337, 360, 382, 408, 431, 457, 484, 508, 536, 567, 595, 624, 653, 687, 715, 749, 781, 813, 850, 884, 919, 957, 993, 1031, 1069, 1108, 1142]

cp's OEIS Frontend

A047800 Number of different values of i^2 + j^2 for i,j in [0, n].

Table of values

List of values