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.

A139102 Numbers whose binary representation shows the distribution of prime numbers up to the n-th prime minus 1, using "0" for primes and "1" for nonprime numbers.

Table of values

n a(n)
1 1
2 2
3 9
4 37
5 599
6 2397
7 38359
8 153437
9 2454999
10 157119967
11 628479869
12 40222711647
13 643563386359
14 2574253545437
15 41188056726999
16 2636035630527967
17 168706280353789919
18 674825121415159677
19 43188807770570219359
20 691020924329123509751
21 2764083697316494039005

List of values

[1, 2, 9, 37, 599, 2397, 38359, 153437, 2454999, 157119967, 628479869, 40222711647, 643563386359, 2574253545437, 41188056726999, 2636035630527967, 168706280353789919, 674825121415159677, 43188807770570219359, 691020924329123509751, 2764083697316494039005]

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

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