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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.

A124415 Numbers k such that 2*k+1, 4*k+1, 8*k+1, 16*k+1, 32*k+1, 64*k+1 and 128*k+1 are primes.

Table of values

n a(n)
1 8325
2 82950
3 884220
4 1120470
5 3441690
6 5627895
7 5765505
8 7664745
9 7757430
10 8555040
11 10739505
12 11891625
13 15514860
14 15623475
15 18268455
16 22631970
17 24833775
18 27373410
19 29342895
20 31286970
21 31577205
22 50077455
23 51541035
24 58646520

List of values

[8325, 82950, 884220, 1120470, 3441690, 5627895, 5765505, 7664745, 7757430, 8555040, 10739505, 11891625, 15514860, 15623475, 18268455, 22631970, 24833775, 27373410, 29342895, 31286970, 31577205, 50077455, 51541035, 58646520]

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

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