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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.

A124077 Indices of the primes in A072762; b(i=a(n)) is prime, b(i) coded as binary word of length=i with k-th bit set iff k is prime (1<=k<=i).

Table of values

n a(n)
1 3
2 5
3 7
4 29
5 73
6 2131
7 4211

List of values

[3, 5, 7, 29, 73, 2131, 4211]

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