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 A214454 #25 Oct 14 2018 03:57:08 %S A214454 1,1,2,2,3,3,3,3,3,3,3,3,3,3,3,3,5,7,8,13,15,23,29,41,52,65,84,114, %T A214454 149,194,257,336,431,547,686,880,1151,1478,1961,2499,3258,4264,5550, %U A214454 7231,9416,12286,16031,20887,27181,35466,46009,60053,78107,102086,133309,174369,227810 %N A214454 Number of primes of the form x^8 + 1 less than 10^n. %C A214454 It is conjectured that there are infinitely many primes of the form x^8 + 1 (and thus this sequence never becomes constant), but this has not been proved. %H A214454 Chai Wah Wu, <a href="/A214454/b214454.txt">Table of n, a(n) for n = 1..90</a> (terms 1..72 from Henryk Dabrowski) %e A214454 a(16) = 3 because the only primes of the form x^8 + 1 < 10^16 are the primes: 2, 257, 65537. %o A214454 (PARI) a(n) = sum(k=1,(10^n-1)^(1/8), isprime(k^8+1)) %Y A214454 Cf. A083844, A214452, A214455. %K A214454 nonn %O A214454 1,3 %A A214454 _Henryk Dabrowski_, Jul 18 2012 %E A214454 More terms from _Henryk Dabrowski_, Jul 28 2012