a(n) = gcd(Sum_{k=1...n} L(k), Product_{j=1...n} L(j)), where L(k) is the k-th Lucas number.

Terms

a(0) =1a(1) =1a(2) =4a(3) =3a(4) =2a(5) =44a(6) =1a(7) =24a(8) =28a(9) =319a(10) =14a(11) =168a(12) =1a(13) =2204a(14) =16a(15) =231a(16) =2a(17) =15124a(18) =1a(19) =1584a(20) =4a(21) =103679a(22) =2a(23) =4176a(24) =7a(25) =710644a(26) =56a(27) =28623a(28) =2a(29) =4870844