A341399 - cp's OEIS frontend

A341399 Number of integer solutions to (x_1)^2 + (x_2)^2 + ... + (x_10)^2 <= n.

n	a(n)
0	1
1	21
2	201
3	1161
4	4541
5	12965
6	29285
7	58085
8	110105
9	198765
10	327829
11	503509
12	765589
13	1152509
14	1642109
15	2243069
16	3083569
17	4221529
18	5551949
19	7115789
20	9166133
21	11777333
22	14763893
23	18121973
24	22316213
25	27634481
26	33512921
27	39812441
28	47674841
29	57294401
30	67510721
31	78592961

[1, 21, 201, 1161, 4541, 12965, 29285, 58085, 110105, 198765, 327829, 503509, 765589, 1152509, 1642109, 2243069, 3083569, 4221529, 5551949, 7115789, 9166133, 11777333, 14763893, 18121973, 22316213, 27634481, 33512921, 39812441, 47674841, 57294401, 67510721, 78592961]

cp's OEIS Frontend

A341399 Number of integer solutions to (x_1)^2 + (x_2)^2 + ... + (x_10)^2 <= n.

Table of values

List of values