a(n) = Product_{i=1..n, j=1..n} (i^8 + i^4*j^4 + j^8).A367670a(n) = Product_{i=1..n, j=1..n} (i^8 + i^4*j^4 + j^8).Terms a(0) =3a(1) =171714816External referencesoeis: A367670