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.

A074809 Largest prime factor of A019518, concatenation of first n primes.

Table of values

n a(n)
1 2
2 23
3 47
4 2357
5 223
6 35339
7 214282847
8 7717859
9 806801
10 185176472401
11 357211
12 4967701595369
13 104364752351
14 27558919
15 5269410931806332951
16 274784055330749
17 1191126125288819
18 178258515898000387
19 2313161253378144566969023310693
20 8730041915527145606449758346652473
21 26293517701186435480644832888393
22 29890227360205834316383307128051
23 3858432486690092813
24 7122852423207105431971
25 93753283248830261744671

List of values

[2, 23, 47, 2357, 223, 35339, 214282847, 7717859, 806801, 185176472401, 357211, 4967701595369, 104364752351, 27558919, 5269410931806332951, 274784055330749, 1191126125288819, 178258515898000387, 2313161253378144566969023310693, 8730041915527145606449758346652473, 26293517701186435480644832888393, 29890227360205834316383307128051, 3858432486690092813, 7122852423207105431971, 93753283248830261744671]

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

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