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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.

A213327 Analog of Fermat quotients: a(n) = (round((phi_2)^p)-2)/p, where phi_2 is silver ratio 1+sqrt(2) and p = prime(n).

Table of values

n a(n)
1 2
2 4
3 16
4 68
5 1476
6 7280
7 189120
8 986244
9 27676612
10 4346071600
11 23696518916
12 3930960079760
13 120508933265760
14 669708812842692
15 20814182249890948
16 3654563002853231440
17 650000099752136709444
18 3664265812073801505200
19 660535426260570501876228

List of values

[2, 4, 16, 68, 1476, 7280, 189120, 986244, 27676612, 4346071600, 23696518916, 3930960079760, 120508933265760, 669708812842692, 20814182249890948, 3654563002853231440, 650000099752136709444, 3664265812073801505200, 660535426260570501876228]

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

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