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.
%I A317972 #8 Sep 03 2018 01:54:19 %S A317972 1387,2047,3277,7957,13747,23377,31417,46657,60787,65077,88357,126217, %T A317972 164737,188057,233017,275887,341497,390937,486737,489997,493697, %U A317972 514447,580337,604117,672487,680627,748657,769567,769757,916327,950797,1092547,1093417 %N A317972 Pseudoprimes congruent to 7 mod 10. %C A317972 McDaniel shows the sequence is infinite. %H A317972 N. J. A. Sloane, <a href="/A317972/b317972.txt">Table of n, a(n) for n = 1..12643</a> %H A317972 Wayne L. McDaniel, <a href="https://doi.org/10.1090/S0025-5718-1989-0968152-6">Some pseudoprimes and related numbers having special forms</a>, Math. Comp. 53:187 (1989), 407-409. %Y A317972 A subsequence of A001567. %Y A317972 Cf. A216667. %K A317972 nonn %O A317972 1,1 %A A317972 _N. J. A. Sloane_, Sep 02 2018