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 A082152 #11 May 23 2015 03:58:28 %S A082152 1,2,5,3,7,12,4,9,15,22,6,11,18,26,35,8,14,21,30,40,51,10,17,25,34,45, %T A082152 57,70,13,20,29,39,50,63,77,92,16,24,33,44,56,69,84,100,117,19,28,38, %U A082152 49,62,76,91,108,126,145,23,32,43,55,68,83,99,116,135,155,176,27,37,48,61 %N A082152 Dispersion of the complement of the pentagonal numbers. %C A082152 Rectangular array read by antidiagonals; a permutation of the natural numbers. (column 1) = (pentagonal numbers) = A000326(n) = n(3n-1)/2. (Dispersion of complement of column 1 of A082152) = (Transpose of A082153). %H A082152 C. Kimberling, <a href="http://faculty.evansville.edu/ck6/integer/intersp.html">Interspersions and Dispersions</a>. %H A082152 C. Kimberling, <a href="http://dx.doi.org/10.1090/S0002-9939-1993-1111434-0">Interspersions and dispersions</a>, Proceedings of the American Mathematical Society, 117 (1993) 313-321. %H A082152 Clark Kimberling and John E. Brown, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL7/Kimberling/kimber67.html">Partial Complements and Transposable Dispersions</a>, J. Integer Seqs., Vol. 7, 2004. %e A082152 Northwest corner: %e A082152 1 2 3 4 6 %e A082152 5 7 9 11 14 %e A082152 12 15 18 21 25 %e A082152 22 26 30 34 39 %e A082152 35 40 45 50 56 %Y A082152 Cf. A082153, A000326. %K A082152 nonn,tabl %O A082152 1,2 %A A082152 _Clark Kimberling_, Apr 05 2003