cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A064723 (L(p)-1)/p where L() are the Lucas numbers (A000032) and p runs through the primes.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 18
5 40
6 210
7 492
8 2786
9 39650
10 97108
11 1459960
12 9030450
13 22542396
14 141358274
15 2249412290
16 36259245522
17 91815545800
18 1500020153484
19 9702063416738
20 24704432285040
21 409634464205812
22 2672366681180466
23 44720842390302450
24 1927655270098608960

List of values

[1, 1, 2, 4, 18, 40, 210, 492, 2786, 39650, 97108, 1459960, 9030450, 22542396, 141358274, 2249412290, 36259245522, 91815545800, 1500020153484, 9702063416738, 24704432285040, 409634464205812, 2672366681180466, 44720842390302450, 1927655270098608960]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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