A382066 - cp's OEIS frontend

A382066 a(n) = Sum_{k=1..prime(n)-1} (-k/prime(n)) * 3^(k-1) / 2, where (p/q) is the Legendre symbol of p and q.

n	a(n)
2	1
3	8
4	151
5	8083
6	70568
7	8910416
8	39392803
9	7701058213
10	2325990648824
11	43563061207573
12	19999898090377928
13	2566793589644124992
14	10627327735475477203
15	2179055220073884519235
16	630486036620986837882904
17	646895254841829205782412249
18	5802709167332592724735012664

[1, 8, 151, 8083, 70568, 8910416, 39392803, 7701058213, 2325990648824, 43563061207573, 19999898090377928, 2566793589644124992, 10627327735475477203, 2179055220073884519235, 630486036620986837882904, 646895254841829205782412249, 5802709167332592724735012664]

cp's OEIS Frontend

A382066 a(n) = Sum_{k=1..prime(n)-1} (-k/prime(n)) * 3^(k-1) / 2, where (p/q) is the Legendre symbol of p and q.

Table of values

List of values