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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A270895 Sierpiński numbers that are squares.

Original entry on oeis.org

18213931681, 5044241991721, 6093734165401, 6278567569849, 17919144076201, 52536446729209, 56470430531761, 72659547739249, 107737943736721, 123343213788001, 136925780937841, 170306127919321, 211292941174561, 296693149397089, 321058916825689
Offset: 1

Views

Author

Arkadiusz Wesolowski, Mar 25 2016

Keywords

Comments

This sequence contains infinitely many numbers that end in 5. See also A233469.

Links

Crossrefs

Cf. A076336, A233469, A270896.

Formula

A000290 INTERSECT A076336.
a(n) = A270896(n)^2.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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