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 A327462 #16 Sep 27 2019 12:56:34 %S A327462 0,0,0,0,0,0,0,1,0,1,0,0,1,1,1,0,1,1,1,0,0,1,2,3,1,1,1,1,2,0,0,0,0,1, %T A327462 2,0,0,1,1,0,1,2,1,1,1,2,0,0,0,1,0,1,1,0,0,1,2,0,0,2,2,1,1,0,0,0,0,0, %U A327462 1,2,0,1,1,0,1,2,3,1,2,3,2,1,1,1,2 %N A327462 Number of holes in decimal expansion of n-th prime. %C A327462 This is A064692 restricted to the primes. %H A327462 Rémy Sigrist, <a href="/A327462/b327462.txt">Table of n, a(n) for n = 1..10000</a> %o A327462 (PARI) forprime (p=2, 439, print1 (vecsum(apply(d -> [1, 0, 0, 0, 1, 0, 1, 0, 2, 1][1+d], digits(p))) ", ")) \\ _Rémy Sigrist_, Sep 27 2019 %Y A327462 Cf. A035103, A064692, A249572, A250256, A327820. %K A327462 nonn,base %O A327462 1,23 %A A327462 _N. J. A. Sloane_, Sep 27 2019