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 A262551 #5 Oct 09 2015 07:50:58 %S A262551 1,1,1,1,9,10,1,10,19,10,1,405,2735,4825,2500,1,406,3140,7560,7325, %T A262551 2500,1,3953,54077,213505,360580,277200,80000 %N A262551 Triangle read by rows: coefficients in Bell's formula for number of ways of making change with a certain set of coins. %H A262551 G. Blom and C.-E. Froeberg, <a href="/A002575/a002575.pdf">Om myntvaexling (On money-changing) [Swedish]</a>, Nordisk Matematisk Tidskrift, 10 (1962), 55-69, 103. [Annotated scanned copy] %e A262551 Triangle begins: %e A262551 1, %e A262551 1,1, %e A262551 1,9,10, %e A262551 1,10,19,10, %e A262551 1,405,2735,4825,2500, %e A262551 1,406,3140,7560,7325,2500, %e A262551 1,3953,54077,213505,360580,277200,80000, %e A262551 ... %K A262551 nonn,tabl,more %O A262551 1,5 %A A262551 _N. J. A. Sloane_, Oct 09 2015