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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.

A255578 Carmichael numbers of the form (12*k+1)*(24*k+1)*(36*k+1)*(72*k+1), where 12*k+1, 24*k+1, 36*k+1 and 72*k+1 are all primes.

Table of values

n a(n)
1 461574735553
2 84154807001953
3 973694665856161
4 3060522900274753
5 11861640972220321
6 386096840467598593
7 2322064552169233153
8 7545246852649391713
9 9688364125836900193
10 10972742858243841313
11 11660828668219467073
12 16553878978808515681
13 17905475062325518273

List of values

[461574735553, 84154807001953, 973694665856161, 3060522900274753, 11861640972220321, 386096840467598593, 2322064552169233153, 7545246852649391713, 9688364125836900193, 10972742858243841313, 11660828668219467073, 16553878978808515681, 17905475062325518273]

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

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