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 A280406 #7 Jan 02 2017 20:06:52 %S A280406 15,25,55,91,115,187,215,235,335,403,415,515,535,655,695,835,955,1115, %T A280406 1195,1393,1405,1555,1895,1963,2095,2155,2335,2395,2615,2815,2995, %U A280406 3235,3295,3635,3935,3985,4295,4415,4435,4735,4855,4915,5095,5515,5815,6415,6835,7135,7195,7415,8035,8135 %N A280406 Odd semiprimes that can be represented as 2p+3q, where p and q are primes, in an increasing number of ways. %C A280406 It is conjectured that all terms of this sequence above 1963 are divisible by 5. Initial search to 1000000. %Y A280406 Cf. A046315, A280389. %K A280406 nonn %O A280406 1,1 %A A280406 _Randy L. Ekl_, Jan 02 2017