cp's OEIS Frontend

A244118 Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 1 as Sum_{k=0..n} T(n,k)*binomial(n,k).

%I A244118 #18 Jun 17 2022 14:19:35
%S A244118 1,0,1,0,-1,3,0,1,-6,16,0,-1,12,-48,125,0,1,-24,144,-500,1296,0,-1,48,
%T A244118 -432,2000,-6480,16807,0,1,-96,1296,-8000,32400,-100842,262144,0,-1,
%U A244118 192,-3888,32000,-162000,605052,-1835008,4782969,0,1,-384,11664,-128000,810000,-3630312,12845056,-38263752,100000000
%N A244118 Triangle read by rows: coefficients T(n,k) of a binomial decomposition of 1 as Sum_{k=0..n} T(n,k)*binomial(n,k).
%C A244118 T(n,k) = (1+k)^(k-1)*(-k)^(n-k) for k>0, where T(n,0) = 0^n.
%H A244118 Stanislav Sykora, <a href="/A244118/b244118.txt">Table of n, a(n) for rows 0..100</a>
%H A244118 S. Sykora, <a href="http://dx.doi.org/10.3247/SL5Math14.004">An Abel's Identity and its Corollaries</a>, Stan's Library, Volume V, 2014, DOI 10.3247/SL5Math14.004. See eq.(4), with b=-1.
%e A244118 The first rows of the triangle are:
%e A244118 1
%e A244118 0  1
%e A244118 0 -1   3
%e A244118 0  1  -6  16
%e A244118 0 -1  12 -48  125
%e A244118 0  1 -24 144 -500 1296
%o A244118 (PARI) seq(nmax,b)={my(v,n,k,irow);
%o A244118   v = vector((nmax+1)*(nmax+2)/2);v[1]=1;
%o A244118   for(n=1,nmax,irow=1+n*(n+1)/2;v[irow]=0;
%o A244118     for(k=1,n,v[irow+k] = (1-k*b)^(k-1)*(k*b)^(n-k););
%o A244118   );return(v);}
%o A244118   a=seq(100,-1);
%Y A244118 Cf. A244116, A244117, A244119, A244120, A244121, A244122, A244123, A244124, A244125, A244126, A244127, A244128, A244129, A244130, A244131, A244132, A244133, A244134, A244135, A244136, A244137, A244138, A244139, A244140, A244141, A244142, A244143.
%K A244118 sign,tabl
%O A244118 0,6
%A A244118 _Stanislav Sykora_, Jun 21 2014