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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.

A288371 Primes of the form k!9 + 1, where k!9 is the nonuple factorial number (A114806).

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 11
6 23
7 37
8 53
9 71
10 113
11 137
12 163
13 191
14 757
15 2161
16 2801
17 51521
18 1418561
19 4093601
20 42456961
21 69509441
22 105616001
23 2420046721
24 9160905601
25 1270453824641
26 2326680294401
27 190787784140801
28 509498986796801
29 2805949277824001
30 612940220628736001

List of values

[2, 3, 5, 7, 11, 23, 37, 53, 71, 113, 137, 163, 191, 757, 2161, 2801, 51521, 1418561, 4093601, 42456961, 69509441, 105616001, 2420046721, 9160905601, 1270453824641, 2326680294401, 190787784140801, 509498986796801, 2805949277824001, 612940220628736001]

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

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