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 A245175 #25 Oct 27 2023 22:04:07 %S A245175 14,8,40,-16,46,-44,46,68,-58,100,-66,-54,54,82,38,-204,314,-214,-64, %T A245175 176,-20,6,120,-72,-158,34,-58,28,680,-590,4,-2,304,-386,208,44,-180, %U A245175 146,-74,-114,408,-458,136,-158,652,340,-902,-66,60,42,-30,490,-466,228 %N A245175 Second differences of A038580. %H A245175 Alois P. Heinz, <a href="/A245175/b245175.txt">Table of n, a(n) for n = 1..10000</a> (first 1000 terms from Jens Kruse Andersen) %H A245175 R. G. Batchko, <a href="http://arxiv.org/abs/1405.2900">A prime fractal and global quasi-self-similar structure in the distribution of prime-indexed primes</a>, arXiv preprint arXiv:1405.2900, 2014. See Table 2. %p A245175 a:= ((f-> n-> f(n+1)-f(n))@@2)(ithprime@@3): %p A245175 seq(a(n), n=1..60); %t A245175 Differences[Nest[Prime, Range[60], 3], 2] (* _Jean-François Alcover_, Oct 06 2018 *) %o A245175 (PARI) f(n) = prime(prime(prime(n))) %o A245175 a(n) = f(n+2)-2*f(n+1)+f(n) %o A245175 vector(50, n, a(n)) \\ _Jens Kruse Andersen_, Jul 18 2014 %Y A245175 Cf. A038580. %K A245175 sign %O A245175 1,1 %A A245175 _N. J. A. Sloane_, Jul 17 2014