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 A258356 #8 Jun 20 2015 14:43:13 %S A258356 2,36,101,107,267,316 %N A258356 Numbers n such that cyclotomic polynomial value Phi(10,n!) is prime. %C A258356 All values except 2 are probable primes. %C A258356 a(7) > 7560. %C A258356 That is, numbers n such that n! belongs to A246392. - _Michel Marcus_, May 30 2015 %e A258356 2 is in the sequence because Phi(10,2!) = 1 - 2 + 2^2 - 2^3 + 2^4 = 11 is prime. %t A258356 Select[Range[0, 7560], PrimeQ[Cyclotomic[10, #!]] &] %Y A258356 Cf. A002981, A002982, A046029, A200906. %K A258356 nonn,more %O A258356 1,1 %A A258356 _Robert Price_, May 27 2015