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.

A354585 Least prime p such that 2^x - 2 + p produces primes for x=1..n and a composite for x=n+1.

Table of values

n a(n)
1 2
2 3
3 11
4 5
5 227
6 17
7 65837
8 1607
9 19427
10 2397347207
11 153535525937
12 157542769194527
13 29503289812427
14 32467505340816977
15 1109038455070356527
16 143924005810811657
17 305948728878647722727

List of values

[2, 3, 11, 5, 227, 17, 65837, 1607, 19427, 2397347207, 153535525937, 157542769194527, 29503289812427, 32467505340816977, 1109038455070356527, 143924005810811657, 305948728878647722727]

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

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