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.

Showing 1-2 of 2 results.

A165698 Numbers n such that the reversal of all six numbers n^k, k<7 are primes.

Original entry on oeis.org

110218462, 316673011, 1021262438, 1043674352, 1079713202, 1102184620, 1114558252, 3151003391, 3166730110, 3177732191, 3185342356, 3247705288, 3264209387, 3277762652, 3307639187, 9835884797, 9956850724, 9998454781
Offset: 1

Views

Author

Farideh Firoozbakht, Sep 29 2009

Keywords

Comments

This sequence is infinite because if n is in the sequence then for all
natural numbers m, 10^m*n is in the sequence.
Number of terms up to 12*10^9 is 50.

Crossrefs

Cf. A118212, A118213, A165696, A165697, A165699.

A165697 a(n) is the smallest prime p such that all the n numbers reversal(p^k), k

Original entry on oeis.org

2, 37, 3121, 10429, 10282339, 9835884797, 101740496633
Offset: 1

Views

Author

Farideh Firoozbakht, Sep 29 2009

Keywords

Comments

By an interesting approach I was able to find a(7). [From Farideh Firoozbakht, Sep 30 2009]

Examples

			Both numbers reversal(37)=73 & reversal(37^2)=9631 are primes and 37 is the
smallest prime number with this property so a(2)=37.

Crossrefs

Cf. A118212, A118213, A165696, A165698.

Extensions

a(7) from Farideh Firoozbakht, Sep 30 2009
Showing 1-2 of 2 results.

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