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.

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A301944 Number of primes of the form b^2 + 1 for b <= 10^n that end in 7.

Original entry on oeis.org

2, 13, 68, 560, 4418, 35953, 304340, 2636531, 23265760, 208241341, 1884492541
Offset: 1

Views

Author

Seiichi Manyama, Mar 29 2018

Keywords

Examples

			17, 37, 197, 257, 577, 677, 1297, 2917, 3137, 4357, 5477, 7057 and 8837 are primes; so a(2) = 13.

Crossrefs

Cf. A002496, A206709, A301943.

Formula

a(n) + A301943(n) + 2 = A206709(n).

Extensions

a(10)-a(11) from Jinyuan Wang, Feb 24 2020
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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