Original entry on oeis.org
1, 1, -1, 5, -43, 527, -8396, 164672, -3835910, 103464895, -3170985454, 108828369497, -4134333957073, 172223139437835, -7805591781504739, 382374360671653989, -20132511625986242785, 1133765691312312723347, -68002260363248096548050
Offset: 0
-
{a(n)=local(A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(-(i-2)))[i-1, j]); )); A=B); return( ((A)[n+1,1]))}
Original entry on oeis.org
1, 1, -2, 12, -118, 1605, -27816, 585046, -14459138, 410368743, -13146830110, 469123986529, -18447791712945, 792514583941223, -36925394368325295, 1854525584914459755, -99872579714406393286, 5740977285851988017769, -350847888975706702249890
Offset: 0
-
{a(n)=local(A=Mat(1), B); for(m=1, n+2, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(-(i-2)))[i-1, j]); )); A=B); return( ((A)[n+2,2]))}
Original entry on oeis.org
1, 1, -3, 22, -250, 3810, -72492, 1649634, -43626510, 1313526375, -44332221175, 1657043432088, -67929461003560, 3029864359322346, -146058681728370600, 7566706624571096610, -419220650458638848514, 24733868801871384287055, -1548237182318766914543100
Offset: 0
-
{a(n)=local(A=Mat(1), B); for(m=1, n+3, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(-(i-2)))[i-1, j]); )); A=B); return( ((A)[n+3,3]))}
Original entry on oeis.org
1, 1, -4, 35, -455, 7735, -161336, 3973212, -112587210, 3603324835, -128433778935, 5042279130343, -216113991649920, 10038333251577820, -502213976534135280, 26920671954736535620, -1539171664433009622090, 93492751831594011076131, -6012423991038631627857900
Offset: 0
-
{a(n)=local(A=Mat(1), B); for(m=1, n+4, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i, B[i, j]=1, B[i, j]=(A^(-(i-2)))[i-1, j]); )); A=B); return( ((A)[n+4,4]))}
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