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.

A118727 Primes that are the sum of the numerator and denominator of a harmonic number.

Table of values

n a(n)
1 2
2 5
3 17
4 37
5 197
6 503
7 9649
8 9901
9 111431
10 1532093
11 1556117
12 71354639
13 392849685203
14 67564865715709
15 67929521152309
16 2551756396706233
17 345246028268898566519
18 73744425850091533377950933665103
19 4418089000986947559043789457061782529431

List of values

[2, 5, 17, 37, 197, 503, 9649, 9901, 111431, 1532093, 1556117, 71354639, 392849685203, 67564865715709, 67929521152309, 2551756396706233, 345246028268898566519, 73744425850091533377950933665103, 4418089000986947559043789457061782529431]

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

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