A215503 - cp's OEIS frontend

A215503 a(n) = (u+1)^n + (-s-1)^n + (t+1)^n + (-1)^n + (-t+1)^n + (s-1)^n + (-u+1)^n where s = sqrt(2), t = sqrt(2-s), u = sqrt(2+s).

n	a(n)
0	7
1	1
2	19
3	13
4	111
5	121
6	763
7	1093
8	5575
9	9697
10	42099
11	84173
12	324591
13	717081
14	2538331
15	6023173
16	20049671
17	50079553
18	159514963
19	413387789
20	1275778031
21	3394968121
22	10242581819
23	27780675397
24	82461727687
25	226743641121
26	665232392883
27	1847286687181
28	5374409263215

[7, 1, 19, 13, 111, 121, 763, 1093, 5575, 9697, 42099, 84173, 324591, 717081, 2538331, 6023173, 20049671, 50079553, 159514963, 413387789, 1275778031, 3394968121, 10242581819, 27780675397, 82461727687, 226743641121, 665232392883, 1847286687181, 5374409263215]

cp's OEIS Frontend

A215503 a(n) = (u+1)^n + (-s-1)^n + (t+1)^n + (-1)^n + (-t+1)^n + (s-1)^n + (-u+1)^n where s = sqrt(2), t = sqrt(2-s), u = sqrt(2+s).

Table of values

List of values