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.

A078413 Smallest positive integer than cannot be obtained from exactly n copies of n using parentheses and the operations +, -, /, *, ^ and concatenation.

Table of values

n a(n)
1 2
2 2
3 5
4 13
5 18
6 89
7 243
8 475
9 1257

List of values

[2, 2, 5, 13, 18, 89, 243, 475, 1257]

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

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