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 A155750 #10 Jun 06 2021 07:28:48 %S A155750 4,6,6,10,8,6,10,8,10,8,10,12,6,6,18,8,12,12,10,8,12,6,24,6,10,12,12, %T A155750 8,10,12,18,6,20,12,10,14,10,14,12,12,12,10,14,6,16,12,12,18,20,16,12, %U A155750 8,16,8,12,6,22,6,12,14,10,18,18,14,10,14,12,18,22,12,6,12,18,6,18,6,24 %N A155750 First differences of A031215. %C A155750 All terms are even. Do all even numbers (A005843) appear at least once? %H A155750 G. C. Greubel, <a href="/A155750/b155750.txt">Table of n, a(n) for n = 1..5000</a> %F A155750 a(n) = A001223(2n) + A001223(2n+1). - _R. J. Mathar_, Feb 27 2009 %F A155750 a(n) = A031131(2n). - _R. J. Mathar_, Feb 27 2009 %t A155750 Table[Prime[2*n+2] - Prime[2 n], {n, 80}] (* _G. C. Greubel_, Jun 05 2021 *) %o A155750 (Sage) [nth_prime(2*n+2) - nth_prime(2*n) for n in (1..80)] # _G. C. Greubel_, Jun 05 2021 %Y A155750 Cf. A005843, A031215. %Y A155750 Cf. A001223, A031131, A110854, A155067. %K A155750 nonn,easy %O A155750 1,1 %A A155750 _Paul Curtz_, Jan 26 2009 %E A155750 Edited and extended by _R. J. Mathar_, Feb 27 2009