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 A098214 #4 Oct 15 2013 22:32:34 %S A098214 1,1,2,2,4,6,6,8,4,2,14,4,6,2,10,8,4,6,12,2,18,6,8,18,10,14,4,2,10,12, %T A098214 8,16,14,6,4,2,10,2,16,6,20,4,12,14,28,4,14,22,12,2,18,10,6,26,24,14, %U A098214 16,6,20,10,12,2,18,42,4,24,18,6,4,20,22,8,12,24,16,14,10,30,6,4,20,22,8,12 %N A098214 Sequence of special consecutive prime differences which can be arranged into rows of distinct differences with k=1,2,3,...length. Each row is obtained from segment of k+1 consecutive primes started with A079007[k]. %C A098214 Rows generated by n-th term of A079007 are all distinct. See definition of A079007. %e A098214 Triangle begins: %e A098214 1, %e A098214 1,2, %e A098214 2,4,6, %e A098214 6,8,4,2, %e A098214 14,4,6,2,10, %e A098214 8,4,6,12,2,18, %e A098214 6,8,18,10,14,4,2, %e A098214 10,12,8,16,14,6,4,2, %e A098214 10,2,16,6,20,4,12,14,28, %e A098214 4,14,22,12,2,18,10,6,26,24, %e A098214 14,16,6,20,10,12,2,18,42,4,24, %e A098214 18,6,4,20,22,8,12,24,16,14,10,30, %e A098214 6,4,20,22,8,12,24,16,14,10,30,18,2, %e A098214 16,8,22,26,4,24,20,6,58,12,14,10,36,18, %e A098214 16,8,22,26,4,24,20,6,58,12,14,10,36,18,2, %e A098214 The 6th row {8,4,6,12,2,18}={a[16],...a[21]} is obtained as first %e A098214 difference sequence of 7 primes started with prime[94]=491=A079007[6]. %e A098214 The k-th row starts and ends with terms a[1+k(k-1)/2] and a[ -1+k+k(k-1)/2]. %Y A098214 Cf. A001223, A079007, A098213. %K A098214 nonn,tabl %O A098214 1,3 %A A098214 _Labos Elemer_, Oct 21 2004