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 A280616 #17 Jan 16 2017 14:12:53 %S A280616 3,4,9,8,16,18,26,32,24,36,42,44,48,66,70,60,74,72,94,106,84,90,102, %T A280616 112,130,108,126,114,166,160,150,144,184,218,174,208,168,220,138,222, %U A280616 232,204,216,262,302,268,234,252,246,240,264,276,306,270,340,318,294,312,342,336,406,330,324 %N A280616 Smallest m such that the m - s is a prime for exactly n distinct squarefree numbers s. %e A280616 a(1) = 3 because 3 - 1 = 2 is prime where 1 is squarefree number. %e A280616 a(2) = 4 because 4 - 1 = 3 and 4 - 2 = 2 are primes where 1 and 2 are squarefree numbers. %e A280616 a(3) = 9 because 9 - 2 = 7, 9 - 6 = 3, 9 - 7 = 2 are primes where 2, 6, 7 are squarefree numbers. %Y A280616 Cf. A004767, A005117, A098983, A279027. %K A280616 nonn %O A280616 1,1 %A A280616 _Juri-Stepan Gerasimov_, Jan 06 2017