A216408 - cp's OEIS frontend

A216408 Perfect squares which can be written neither as a^2+b^2, nor as a^2+2b^2, nor as a^2+3b^2, nor as a^2+7*b^2, with a > 0 and b > 0.

n	a(n)
1	1
2	2209
3	27889
4	96721
5	146689
6	229441
7	253009
8	418609
9	516961
10	703921
11	786769
12	966289
13	1324801
14	1495729
15	1739761
16	2211169
17	2283121
18	2430481
19	3323329
20	3411409
21	4255969
22	4879681
23	5527201
24	5755201
25	7091569
26	7219969
27	8427409
28	8994001
29	9138529
30	10029889
31	10182481
32	11282881
33	11607649
34	12439729
35	13476241
36	14922769
37	15295921

[1, 2209, 27889, 96721, 146689, 229441, 253009, 418609, 516961, 703921, 786769, 966289, 1324801, 1495729, 1739761, 2211169, 2283121, 2430481, 3323329, 3411409, 4255969, 4879681, 5527201, 5755201, 7091569, 7219969, 8427409, 8994001, 9138529, 10029889, 10182481, 11282881, 11607649, 12439729, 13476241, 14922769, 15295921]

cp's OEIS Frontend

A216408 Perfect squares which can be written neither as a^2+b^2, nor as a^2+2b^2, nor as a^2+3b^2, nor as a^2+7*b^2, with a > 0 and b > 0.

Table of values

List of values

cp's OEIS Frontend

A216408 Perfect squares which can be written neither as a^2+b^2, nor as a^2+2*b^2, nor as a^2+3*b^2, nor as a^2+7*b^2, with a > 0 and b > 0.

Table of values

List of values

A216408 Perfect squares which can be written neither as a^2+b^2, nor as a^2+2b^2, nor as a^2+3b^2, nor as a^2+7*b^2, with a > 0 and b > 0.