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.

A212667 Numbers n such that the sum of digits of n equals the concatenation of the distinct prime divisors of n.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 2401
6 4913
7 655360
8 3906250
9 6553600
10 39062500
11 41943040
12 65536000
13 390625000
14 419430400
15 655360000
16 3906250000
17 4194304000
18 6553600000
19 27512614111
20 39062500000
21 41943040000
22 65536000000
23 271818611107
24 390625000000
25 419430400000

List of values

[2, 3, 5, 7, 2401, 4913, 655360, 3906250, 6553600, 39062500, 41943040, 65536000, 390625000, 419430400, 655360000, 3906250000, 4194304000, 6553600000, 27512614111, 39062500000, 41943040000, 65536000000, 271818611107, 390625000000, 419430400000]