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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.

A217404 Numbers of the form 2^r * 7^s whose decimal representation has a prime number of each digit 0-9.

Table of values

n a(n)
1 326249942735257021186048
2 3059867626981844171358208
3 1745397244661045235955007488
4 3297183493952696040281709568
5 53076679184360679286299951104
6 55415762982862962349014692709376

List of values

[326249942735257021186048, 3059867626981844171358208, 1745397244661045235955007488, 3297183493952696040281709568, 53076679184360679286299951104, 55415762982862962349014692709376]

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

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