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 A084192 #21 Mar 09 2019 20:32:35 %S A084192 1,2,2,3,4,3,4,8,7,4,5,12,15,10,5,6,16,24,26,14,6,7,20,36,44,35,18,7, %T A084192 8,26,52,70,71,52,23,8,9,32,70,108,126,114,69,28,9,10,40,93,162,211, %U A084192 216,165,89,34,10,11,46,121,228,336,388,345,234,112,40,11,12,54,154,310,524 %N A084192 Array read by antidiagonals: T(n,k) = solution to postage stamp problem with n stamps and k denominations (n >= 1, k >= 1). %C A084192 _Fred Lunnon_ [W. F. Lunnon] defines "solution" to be the smallest value not obtainable by the best set of stamps. The solutions given in this sequence and in A001208, A001209, A001210, A001211, A001212, ... are one lower than this, that is, the sequence gives the largest number obtainable without a break using the best set of stamps. %e A084192 Array begins: %e A084192 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ... %e A084192 2, 4, 7, 10, 14, 18, 23, 28, 34, 40, ... %e A084192 3, 8, 15, 26, 35, 52, 69, 89, 112, ... %e A084192 4, 12, 24, 44, 71, 114, 165, 234, ... %e A084192 5, 16, 36, 70, 126, 216, 345, ... %e A084192 6, 20, 52, 108, 211, 388, ... %e A084192 7, 26, 70, 162, 336, ... %e A084192 8, 32, 93, 228, ... %e A084192 9, 40, 121, ... %e A084192 10, 46, ... %e A084192 11, ... %e A084192 ... %Y A084192 Postage stamp sequences: A001208 A001209 A001210 A001211 A001212 A001213 A001214 A001215 A001216 A005342 A005343 A005344 A014616 A053346 A053348 A075060 A084192 A084193 %Y A084192 A084193 gives transposed array. Rows and columns give rise to A014616, A001208, A001209, A001210, A001211, A053346, A053348, A001212, A001213, A001214, A001215, A001216, A005342, A005343, A005344, A075060. %K A084192 nonn,easy,nice,tabl %O A084192 0,2 %A A084192 _N. J. A. Sloane_, Jun 20 2003 %E A084192 Entry improved by comments from John Seldon (johnseldon(AT)onetel.com), Sep 15 2004 %E A084192 More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Jun 26 2003 %E A084192 Comments corrected by _Shawn Pedersen_, Apr 17 2012