A216827 - cp's OEIS frontend

A216827 Numbers whose squares 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	47
3	167
4	311
5	383
6	479
7	503
8	647
9	719
10	839
11	887
12	983
13	1151
14	1223
15	1319
16	1487
17	1511
18	1559
19	1823
20	1847
21	2063
22	2209
23	2351
24	2399
25	2663
26	2687
27	2903
28	2999
29	3023
30	3167
31	3191
32	3359
33	3407
34	3527
35	3671
36	3863
37	3911
38	4007
39	4079
40	4583
41	4679
42	4703
43	4751
44	4871
45	4919
46	5039
47	5087
48	5351
49	5519
50	5591
51	5711
52	5879
53	5927

[1, 47, 167, 311, 383, 479, 503, 647, 719, 839, 887, 983, 1151, 1223, 1319, 1487, 1511, 1559, 1823, 1847, 2063, 2209, 2351, 2399, 2663, 2687, 2903, 2999, 3023, 3167, 3191, 3359, 3407, 3527, 3671, 3863, 3911, 4007, 4079, 4583, 4679, 4703, 4751, 4871, 4919, 5039, 5087, 5351, 5519, 5591, 5711, 5879, 5927]

cp's OEIS Frontend

A216827 Numbers whose squares 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

A216827 Numbers whose squares 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

A216827 Numbers whose squares 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.