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 A158940 #7 Jun 30 2022 14:51:13 %S A158940 2,7,31,1637,1831,74653,322171,5051309,11938793,245333213,245333159, %T A158940 130272314561,1273135176799,23840790158827 %N A158940 First primes followed by sequences of exactly n monotonic decreasing prime gaps. %C A158940 a(15) > 1.3*10^14. - _Giovanni Resta_, Apr 19 2016 %C A158940 Banks, Freiberg, & Turnage-Butterbaugh show that a(n) exists for each n. - _Charles R Greathouse IV_, Jun 30 2022 %H A158940 William D. Banks, Tristan Freiberg, and Caroline L. Turnage-Butterbaugh, <a href="https://arxiv.org/abs/1311.7003">Consecutive primes in tuples</a> (2013), arXiv:1311.7003 [math.NT]. %e A158940 a(4)=1637 is the first prime to be followed by n=4 monotonic decreasing prime gaps: 20,6,4,2. %e A158940 a(13)=1273135176799 is the first prime to be followed by n=13 monotonic decreasing prime gaps: 72,60,46,44,42,36,34,24,12,8,6,4,2. %Y A158940 Cf. A158939 (monotonic increasing prime gaps) %K A158940 more,nonn %O A158940 1,1 %A A158940 Alan Worley (aw(AT)xiboo.co.uk), Mar 31 2009 %E A158940 a(14) from _Giovanni Resta_, Apr 19 2016