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 A179198 #2 Mar 30 2012 18:37:22 %S A179198 0,1,0,-2,2,0,9,-4,3,0,-64,18,-6,4,0,620,-128,27,-8,5,0,-7536,1240, %T A179198 -192,36,-10,6,0,109032,-15072,1860,-256,45,-12,7,0,-1809984,218064, %U A179198 -22608,2480,-320,54,-14,8,0,33562944,-3619968,327096,-30144,3100,-384,63,-16 %N A179198 Matrix log of triangle A030528, where A030528(n,k) = C(k,n-k). %F A179198 L(n,k) = (k+1)*L(n-k,0). %F A179198 E.g.f. of column 0 satisfies: G(x) = (1+x)/(1+2*x)*G(x+x^2); more formulas given in A179199. %e A179198 Triangle L begins: %e A179198 0; %e A179198 1,0; %e A179198 -2,2,0; %e A179198 9,-4,3,0; %e A179198 -64,18,-6,4,0; %e A179198 620,-128,27,-8,5,0; %e A179198 -7536,1240,-192,36,-10,6,0; %e A179198 109032,-15072,1860,-256,45,-12,7,0; %e A179198 -1809984,218064,-22608,2480,-320,54,-14,8,0; %e A179198 33562944,-3619968,327096,-30144,3100,-384,63,-16,9,0; %e A179198 -681799680,67125888,-5429952,436128,-37680,3720,-448,72,-18,10,0; %e A179198 14980204800,-1363599360,100688832,-7239936,545160,-45216,4340,-512,81,-20,11,0; ... %e A179198 where column_k = (k+1)*column_0: L(n,k) = (k+1)*L(n-k,0). %o A179198 (PARI) {L(n,k)=local(A030528=matrix(n+1,n+1,r,c,if(r>=c,binomial(c,r-c))),LOG,ID=A030528^0); LOG=sum(m=1,n+1,-(ID-A030528)^m/m);(n-k)!*LOG[n+1,k+1]} %Y A179198 Cf. A179199 (column 0), A179200, A179201, A030528. %K A179198 sign %O A179198 0,4 %A A179198 _Paul D. Hanna_, Jul 09 2010