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.

A309565 Least base-10 palindrome whose factorization includes an arbitrary number m of prime factors, with n <= m of them, all counted with multiplicity, being base-10 palindromes.

Table of values

n a(n)
0 1
1 2
2 4
3 8
4 88
5 252
6 2772
7 29792
8 2112
9 4224
10 8448
11 489984
12 48384
13 2977792
14 8634368
15 405504
16 40955904
17 405909504
18 23080108032
19 25135153152
20 677707776
21 2557800087552
22 21128282112
23 633498894336
24 23255666655232
25 8691508051968
26 29142024192
27 65892155129856
28 4815463645184

List of values

[1, 2, 4, 8, 88, 252, 2772, 29792, 2112, 4224, 8448, 489984, 48384, 2977792, 8634368, 405504, 40955904, 405909504, 23080108032, 25135153152, 677707776, 2557800087552, 21128282112, 633498894336, 23255666655232, 8691508051968, 29142024192, 65892155129856, 4815463645184]

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

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