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.

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A245241 Integers n such that 6 * 7^n + 1 is prime.

Original entry on oeis.org

0, 1, 4, 9, 99, 412, 2633, 5093, 5632, 28233, 36780, 47084, 53572
Offset: 1

Views

Author

Robert Price, Nov 14 2014

Keywords

Comments

All terms correspond to verified primes, that is, not merely probable primes.
a(14) > 2*10^5.

Examples

			4 is in this sequence because 6 * 7^4 + 1 = 14407, which is prime.

Crossrefs

Cf. A003307, A002235, A046865, A079906, A001771, A005541, A056725, A046867, A079907.
Cf. A005537, A005538, A005539, A216889, A216890, A247260.

Programs

  • Mathematica
    Select[Range[0,200000], PrimeQ[6 * 7^# + 1] &]
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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