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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A228642 Squares of primes mod 100.

Original entry on oeis.org

1, 4, 9, 21, 25, 29, 41, 49, 61, 69, 81, 89
Offset: 1

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Author

Richard R. Forberg, Aug 28 2013

Keywords

Comments

a(n) is the complete list of the last two digits of terms in A001248, with leading zeros omitted.
Numbers 4 and 25 appear only once as the squares of 2 and 5 respectively.
This leaves only 10 different digit pairs that recur in A001248.
Contrast with A010461 which has 22 different values for the squares of the integers (see A000290), all of which recur.
Nearly identical to A210251, for the squares of odd numbers.

Crossrefs

Cf. A001248, A000290.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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