38146972655domain: NAppears in sequencesa(0) = 0; a(n) = 5*a(n-1) + 5.at n=15A104891a(1)=1, a(n) = a(n-1) + (p-1)*p^(n/2-1) if n is even, otherwise a(n) = a(n-1) + p^((n-1)/2), where p=5.at n=29A133629