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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.

A108841 Palindromic primes in which all internal digits are 4.

Table of values

n a(n)
1 1444441
2 3444443
3 74444444447
4 3444444444443
5 7444444444444444444444444444447
6 1444444444444444444444444444444444444444444444444444444444444444441

List of values

[1444441, 3444443, 74444444447, 3444444444443, 7444444444444444444444444444447, 1444444444444444444444444444444444444444444444444444444444444444441]

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

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