A220978 - cp's OEIS frontend

A220978 a(n) = 3^(2n+1) - 3^(n+1) + 1: The left Aurifeuillian factor of 3^(6n+3) + 1.

n	a(n)
0	1
1	19
2	217
3	2107
4	19441
5	176419
6	1592137
7	14342347
8	129120481
9	1162202419
10	10460176057
11	94142647387
12	847287015121
13	7625592702019
14	68630363015977
15	617673353237227
16	5559060437415361
17	50031544711579219
18	450283904728735897
19	4052555149532191867

[1, 19, 217, 2107, 19441, 176419, 1592137, 14342347, 129120481, 1162202419, 10460176057, 94142647387, 847287015121, 7625592702019, 68630363015977, 617673353237227, 5559060437415361, 50031544711579219, 450283904728735897, 4052555149532191867]

cp's OEIS Frontend

A220978 a(n) = 3^(2n+1) - 3^(n+1) + 1: The left Aurifeuillian factor of 3^(6n+3) + 1.

Table of values

List of values

cp's OEIS Frontend

A220978 a(n) = 3^(2*n+1) - 3^(n+1) + 1: The left Aurifeuillian factor of 3^(6*n+3) + 1.

Table of values

List of values

A220978 a(n) = 3^(2n+1) - 3^(n+1) + 1: The left Aurifeuillian factor of 3^(6n+3) + 1.