67662254017domain: NAppears in sequencesa(n) = 3*a(n-1) + 4*a(n-2) - a(n-3) + 3*a(n-4) + 4*a(n-5).at n=21A135450a(n) = n^12 - n^10 + n^8 - n^6 + n^4 - n^2 + 1.at n=8A270204Array T(n,m) = (2^(m*(2*n+1))+1)/(2^m+1) read by antidiagonals.at n=30A360967