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.

A104907 Numbers n such that d(n)*reversal(n)=sigma(n), where d(n) is number of positive divisors of n.

Table of values

n a(n)
1 1
2 73
3 861
4 7993
5 8241
6 799993
7 7999993
8 44908500
9 82000041
10 293884500
11 6279090751
12 8200000041
13 62698513951
14 79999999993
15 82000000041
16 374665576800
17 597921764310
18 7999999999993
19 8200000000041

List of values

[1, 73, 861, 7993, 8241, 799993, 7999993, 44908500, 82000041, 293884500, 6279090751, 8200000041, 62698513951, 79999999993, 82000000041, 374665576800, 597921764310, 7999999999993, 8200000000041]

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

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