Integers of the form m! + n!, m and n = positive integers.

Terms

a(0) =2a(1) =3a(2) =4a(3) =7a(4) =8a(5) =12a(6) =25a(7) =26a(8) =30a(9) =48a(10) =121a(11) =122a(12) =126a(13) =144a(14) =240a(15) =721a(16) =722a(17) =726a(18) =744a(19) =840a(20) =1440a(21) =5041a(22) =5042a(23) =5046a(24) =5064a(25) =5160a(26) =5760a(27) =10080a(28) =40321a(29) =40322