112981880922domain: NAppears in sequencesa(n) = a(n-1) + 6*a(n-2), a(0)=1, a(1)=0.at n=24A102901a(0)=1, a(1)=6, a(n)=13*a(n-1)-36*a(n-2) for n>1.at n=12A165314a(n) = floor((2*3^n+3*2^n)/5).at n=24A178936