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.

A342174 Primes in A342173.

Original entry on oeis.org

3, 11, 23, 43, 53, 71, 107, 229, 241, 269, 293, 313, 643, 701, 857, 883, 1109, 1361, 1601, 1693, 1697, 1721, 1867, 2267, 2621, 2719, 2767, 2789, 2971, 3067, 3137, 3169, 3529, 3533, 3557, 3739, 3767, 4007, 4093, 4139, 4153, 4219, 4337, 4423, 4447, 4451, 4517, 4663, 4787, 4943, 5279, 5387, 5501
Offset: 1

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Author

J. M. Bergot and Robert Israel, Mar 03 2021

Keywords

Examples

			The first three primes in A342173 are a(1) = A342173(3) = 3, a(2) = A342173(5) = 11, and a(3) = A342173(8) = 23.
		

Crossrefs

Cf. A342173.

Programs

  • Maple
    f:= proc(n) local t, i, s;
      t:= ithprime(n);
      add(floor(t/ ithprime(i)), i=1..n-1)
    end proc:
    select(isprime, map(f,[$1..100]));