Triangle read by rows: T(n,k) = (A002110(n) + A002110(k)) / A002110(k), 1 <= k <= n.

Terms

a(0) =2a(1) =4a(2) =2a(3) =16a(4) =6a(5) =2a(6) =106a(7) =36a(8) =8a(9) =2a(10) =1156a(11) =386a(12) =78a(13) =12a(14) =2a(15) =15016a(16) =5006a(17) =1002a(18) =144a(19) =14a(20) =2a(21) =255256a(22) =85086a(23) =17018a(24) =2432a(25) =222a(26) =18a(27) =2a(28) =4849846a(29) =1616616