Diagonal sums of the triangle A190152.

Terms

a(0) =1a(1) =1a(2) =2a(3) =11a(4) =30a(5) =91a(6) =303a(7) =936a(8) =2936a(9) =9300a(10) =29209a(11) =91917a(12) =289547a(13) =911218a(14) =2868341a(15) =9029949a(16) =28424456a(17) =89477119a(18) =281667368a(19) =886657081a(20) =2791106585a(21) =8786130132a(22) =27657838272a(23) =87064082194a(24) =274068969337a(25) =862741399379