A333173 - cp's OEIS frontend

A333173 a(n) = r_4(n^2 + 1), where r_4(k) is the number of ways of writing k as a sum of 4 squares (A000118).

n	a(n)
0	8
1	24
2	48
3	144
4	144
5	336
6	304
7	744
8	672
9	1008
10	816
11	1488
12	1440
13	2592
14	1584
15	2736
16	2064
17	4320
18	3472
19	4368
20	3216
21	6048
22	4704
23	7776
24	4624
25	7536
26	5424
27	10656
28	7584
29	10128
30	7776
31	12768
32	10416
33	15840
34	10080
35	14736
36	10384
37	19872
38	14736
39	18288
40	12816
41	20904
42	16992
43	28272

[8, 24, 48, 144, 144, 336, 304, 744, 672, 1008, 816, 1488, 1440, 2592, 1584, 2736, 2064, 4320, 3472, 4368, 3216, 6048, 4704, 7776, 4624, 7536, 5424, 10656, 7584, 10128, 7776, 12768, 10416, 15840, 10080, 14736, 10384, 19872, 14736, 18288, 12816, 20904, 16992, 28272]

cp's OEIS Frontend

A333173 a(n) = r_4(n^2 + 1), where r_4(k) is the number of ways of writing k as a sum of 4 squares (A000118).

Table of values

List of values