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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.

A373765 a(n) is the first number that starts a sequence of exactly n primes x(1), ..., x(n) where x(i+1) = A004093(x(i)) is the digit reversal of 2 * x(i).

Table of values

n a(n)
1 2
2 7
3 19
4 487
5 1637
6 389047

List of values

[2, 7, 19, 487, 1637, 389047]

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

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