A329102 Numbers k such that both k^2 + 3 and 2^k + 3 are primes.
2, 4, 28, 784
Offset: 1
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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