Diagonal sums of triangle A099573.

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =4a(5) =5a(6) =9a(7) =11a(8) =18a(9) =23a(10) =37a(11) =48a(12) =74a(13) =97a(14) =147a(15) =195a(16) =290a(17) =387a(18) =568a(19) =763a(20) =1108a(21) =1495a(22) =2152a(23) =2915a(24) =4167a(25) =5662a(26) =8047a(27) =10962a(28) =15506a(29) =21168