A126271 - cp's OEIS frontend

A126271 a(n) = order of Galois group of the polynomial P(x) + n if P(x) + n (after dividing by the gcd of its coefficients) is irreducible, otherwise a(n) = 0, where P(x) = 128x^8 - 256x^6 + 160x^4 - 32x^2 + 1.

n	a(n)
0	32
1	32
2	16
3	32
4	32
5	32
6	32
7	32
8	32
9	16
10	32
11	32
12	32
13	16
14	32
15	32
16	32
17	32
18	32
19	32
20	32
21	32
22	32
23	32
24	32
25	32
26	16
27	16
28	32
29	32
30	32

[32, 32, 16, 32, 32, 32, 32, 32, 32, 16, 32, 32, 32, 16, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 16, 16, 32, 32, 32]