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 A211006 #9 Oct 20 2012 10:57:37 %S A211006 1,5,4,5,6,7,27,11,12,13,45,17,18,19,63,23,130,29,30,31,170,37,117,41, %T A211006 42,43,135,47,250,53,280,59,60,61,320,67,207,71,72,73,380,79,243,83, %U A211006 430,89,651,97,297,101,102,103,315,107,108,109,333,113,1560,127,387,131 %N A211006 Pair (n,p) where n is the sum of adjacent nonprimes and p is the sum of adjacent primes. %F A211006 a(n) = A109921(n+2), n >= 3. %e A211006 ----------------------------------------- %e A211006 . Array from %e A211006 n A000027 a(n) %e A211006 ----------------------------------------- %e A211006 1 1; 1 %e A211006 2 2, 3; 5 %e A211006 3 4; 4 %e A211006 4 5; 5 %e A211006 5 6; 6 %e A211006 6 7; 7 %e A211006 7 8, 9, 10; 27 %e A211006 8 11; 11 %e A211006 9 12; 12 %e A211006 10 13; 13 %e A211006 11 14, 15, 16; 45 %e A211006 12 17; 17 %e A211006 13 18; 18 %e A211006 14 19; 19 %e A211006 15 20, 21, 22; 63 %e A211006 16 23; 23 %e A211006 17 24, 25, 26, 27, 28; 130 %Y A211006 Partial sums give A211007. %Y A211006 A variant of A109921. %Y A211006 Cf. A000040, A018252, A054265, A211005. %K A211006 nonn,tabf %O A211006 1,2 %A A211006 _Omar E. Pol_, Aug 11 2012