1568239201domain: NAppears in sequencesa(n) = (8*n + 7)^4.at n=24A017152a(n) = (10*n + 9)^4.at n=19A017380a(n) = (11*n + 1)^4.at n=18A017404a(n) = (12*n + 7)^4.at n=16A017608Fourth powers of Lucas numbers A000032.at n=11A099923a(n) = Product_{k=1..n} (1 + 4*sin(2*Pi*k/n)^2).at n=22A152152a(n) = A001350(n)^4.at n=10A329488