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.

A104190 Sums of primes between successive powers of two.

Original entry on oeis.org

2, 8, 48, 270, 1392, 6862, 32440, 149114, 674344, 3003292, 13234674, 57809228, 250594424, 1079480960, 4624303560, 19720668918, 83744226026, 354354250476, 1494620712320, 6286217598392, 26370903868480, 110375582988186, 461002956906910, 1921809181446898, 7997638730622268
Offset: 0

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Author

Roger L. Bagula, Mar 12 2005

Keywords

Crossrefs

Programs

  • Mathematica
    a = Table[Sum[Prime[i], {i, 2^n, 2^(n + 1) - 1}], {n, 0, 24}]

Formula

a(n) = Sum_{i=2^n..2^(n+1)-1} prime(i).
a(n) = (A099825(n+1) - A099825(n)) - (A033844(n+1) - A033844(n)). - Amiram Eldar, Jun 04 2025

Extensions

a(20)-a(24) from Amiram Eldar, Jun 04 2025