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.

A237912 Smallest number m (not ending in a 0) such that m and its digit reversal A004086(m) both have n prime factors (counted with multiplicity).

Table of values

n a(n)
1 13
2 15
3 117
4 126
5 1386
6 2576
7 21708
8 25515
9 21168
10 46848
11 295245
12 2937856
13 6351048
14 21989376
15 217340928
16 2154281472
17 2196652032
18 21120051456
19 21122906112
20 40915058688
21 274148425728
22 2150086519296
23 2707602702336
24 6167442456576
25 21907217055744
26 29798871072768
27 420127895977984

List of values

[13, 15, 117, 126, 1386, 2576, 21708, 25515, 21168, 46848, 295245, 2937856, 6351048, 21989376, 217340928, 2154281472, 2196652032, 21120051456, 21122906112, 40915058688, 274148425728, 2150086519296, 2707602702336, 6167442456576, 21907217055744, 29798871072768, 420127895977984]

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

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