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.

A357436 Start with a(1)=2; to get a(n+1) insert in a(n) the smallest possible digit at the rightmost possible position such that the new number is a prime.

Table of values

n a(n)
1 2
2 23
3 223
4 2203
5 22003
6 220013
7 2200103
8 22000103
9 223000103
10 2230001003
11 22300010023
12 223000100023
13 2230001000203
14 22301001000203
15 223010001000203
16 2230010001000203
17 22300010001000203
18 222300010001000203
19 2223000100010001203
20 22203000100010001203
21 222030001000010001203
22 2220300010200010001203

List of values

[2, 23, 223, 2203, 22003, 220013, 2200103, 22000103, 223000103, 2230001003, 22300010023, 223000100023, 2230001000203, 22301001000203, 223010001000203, 2230010001000203, 22300010001000203, 222300010001000203, 2223000100010001203, 22203000100010001203, 222030001000010001203, 2220300010200010001203]

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

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