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.

A349705 Numbers k such that the concatenation in increasing order of their prime factors, with multiplicity, is congruent to 1 (mod k).

Table of values

n a(n)
1 36
2 39
3 66
4 1435
5 5714
6 6410
7 13861
8 22564
9 27346
10 33137
11 45542
12 79260
13 171860
14 268218
15 442068
16 486127
17 675423
18 2287527
19 3710027
20 9610766
21 14318290
22 26293568
23 29361702
24 49703324
25 227358366
26 433100023
27 442960845
28 479174118
29 1221238938
30 1243718114
31 4053362596
32 8620689655

List of values

[36, 39, 66, 1435, 5714, 6410, 13861, 22564, 27346, 33137, 45542, 79260, 171860, 268218, 442068, 486127, 675423, 2287527, 3710027, 9610766, 14318290, 26293568, 29361702, 49703324, 227358366, 433100023, 442960845, 479174118, 1221238938, 1243718114, 4053362596, 8620689655]

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

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