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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.

A135720 a(n) is the smallest Carmichael number (A002997) with the n-th prime as its smallest prime divisor, or 0 if no such number exists.

Table of values

n a(n)
2 561
3 1105
4 1729
5 75361
6 29341
7 162401
8 334153
9 1615681
10 3581761
11 399001
12 294409
13 252601
14 1152271
15 104569501
16 2508013
17 178837201
18 6189121
19 10267951
20 10024561
21 14469841
22 4461725581
23 985052881
24 19384289
25 23382529
26 3828001
27 90698401
28 84350561
29 6733693
30 17098369

List of values

[561, 1105, 1729, 75361, 29341, 162401, 334153, 1615681, 3581761, 399001, 294409, 252601, 1152271, 104569501, 2508013, 178837201, 6189121, 10267951, 10024561, 14469841, 4461725581, 985052881, 19384289, 23382529, 3828001, 90698401, 84350561, 6733693, 17098369]

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

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