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.

A124514 Numbers k for which 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 561330
2 1082115
3 1164735
4 5128905
5 5154945
6 6157350
7 7015155
8 7072770
9 9549960
10 11551830
11 12088065
12 14421825
13 18544365
14 19099920
15 21194760
16 24580050
17 25392720
18 26277285
19 31400085
20 34359030
21 42932385
22 44087025
23 47915595

List of values

[561330, 1082115, 1164735, 5128905, 5154945, 6157350, 7015155, 7072770, 9549960, 11551830, 12088065, 14421825, 18544365, 19099920, 21194760, 24580050, 25392720, 26277285, 31400085, 34359030, 42932385, 44087025, 47915595]

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

Content is available under The OEIS End-User License Agreement.