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.

A217425 Numbers of the form 5^r*7^s whose decimal representations are such that each digit 0-9 appears a prime number of times.

Table of values

n a(n)
1 97402668820327149658203125
2 81209257154451887573232591061530625
3 13375863052949754169544537548117223100875
4 4587921027161765680153776379004207523600125
5 2478309849684200670569842256516437530517578125

List of values

[97402668820327149658203125, 81209257154451887573232591061530625, 13375863052949754169544537548117223100875, 4587921027161765680153776379004207523600125, 2478309849684200670569842256516437530517578125]

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

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