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.

A090587 Smallest prime with exactly n consecutive zeros in the longest run of zeros in its binary expansion.

Table of values

n a(n)
0 3
1 2
2 19
3 17
4 67
5 131
6 641
7 257
8 2053
9 10243
10 4099
11 12289
12 40961
13 32771
14 65539
15 65537
16 262147
17 786433
18 4194319
19 7340033
20 23068673
21 50331653
22 67108879
23 436207619
24 167772161
25 268435463
26 268435459
27 1073741831
28 1073741827
29 3221225473
30 21474836483
31 68719476767

List of values

[3, 2, 19, 17, 67, 131, 641, 257, 2053, 10243, 4099, 12289, 40961, 32771, 65539, 65537, 262147, 786433, 4194319, 7340033, 23068673, 50331653, 67108879, 436207619, 167772161, 268435463, 268435459, 1073741831, 1073741827, 3221225473, 21474836483, 68719476767]

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

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