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.

A046376 Palindromes with exactly 2 palindromic prime factors (counted with multiplicity), and no other prime factors.

Table of values

n a(n)
1 4
2 6
3 9
4 22
5 33
6 55
7 77
8 121
9 202
10 262
11 303
12 393
13 505
14 626
15 707
16 939
17 1111
18 1441
19 1661
20 1991
21 3443
22 3883
23 7997
24 10201
25 13231
26 15251
27 18281
28 19291
29 20602
30 22622
31 22822
32 24842
33 26662
34 28682
35 30903
36 31613
37 33933
38 35653
39 37673
40 38683
41 39993
42 60206
43 60406
44 60806

List of values

[4, 6, 9, 22, 33, 55, 77, 121, 202, 262, 303, 393, 505, 626, 707, 939, 1111, 1441, 1661, 1991, 3443, 3883, 7997, 10201, 13231, 15251, 18281, 19291, 20602, 22622, 22822, 24842, 26662, 28682, 30903, 31613, 33933, 35653, 37673, 38683, 39993, 60206, 60406, 60806]

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

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