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.

A364023 Palindromes that have at least two distinct prime factors and whose prime factors, listed (with multiplicity) in descending order and concatenated, form a palindrome in base 10.

Table of values

n a(n)
1 111
2 414
3 777
4 35853
5 1226221
6 7673767
7 7744477
8 9396939
9 859767958
10 11211911211
11 12467976421
12 72709290727
13 93969696939
14 1030507050301
15 1120237320211
16 1225559555221
17 1234469644321
18 1334459544331
19 3254595954523
20 10048622684001
21 100330272033001
22 100827848728001

List of values

[111, 414, 777, 35853, 1226221, 7673767, 7744477, 9396939, 859767958, 11211911211, 12467976421, 72709290727, 93969696939, 1030507050301, 1120237320211, 1225559555221, 1234469644321, 1334459544331, 3254595954523, 10048622684001, 100330272033001, 100827848728001]