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.

A306761 Let digsum(k) = A007953(k) denote the digital sum of k. The sequence lists the smallest integer k such that digsum(k) = digsum (k/d(1)) = digsum (k/d(2)) = ... = digsum (k/d(n)) where d(i) are the n distinct prime factors of k.

Table of values

n a(n)
1 27
2 54
3 270
4 4158
5 20790
6 270270
7 36506106
8 464053590
9 18621166410

List of values

[27, 54, 270, 4158, 20790, 270270, 36506106, 464053590, 18621166410]

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

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