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 A364221 #6 Jul 15 2023 05:53:53 %S A364221 28754556,103529256,121576571,288033576,293979516,414100179,497440040, %T A364221 584411859,766411476,858663636,1498843176,1591095336,1637221416, %U A364221 1683347496,1775599656,1816140156,2341109715,2789551400,2882625576,3042399699,3044066856,3067129896,3240102696 %N A364221 Starts of runs of 6 consecutive integers that are Jacobsthal-Niven numbers (A364216). %C A364221 Are there 7 or more consecutive integers that are Jacobsthal-Niven numbers? %H A364221 Amiram Eldar, <a href="/A364221/b364221.txt">Table of n, a(n) for n = 1..45</a> %t A364221 consecJacobsthalNiven[1.2*10^8, 6] (* using the function from A364217 *) %o A364221 (PARI) lista(1.2*10^8, 6) \\ using the function from A364217 %Y A364221 Subsequence of A364216, A364217, A364218, A364219 and A364220. %Y A364221 Cf. A330929. %K A364221 nonn,base %O A364221 1,1 %A A364221 _Amiram Eldar_, Jul 14 2023