Diagonal sums of number triangle A106522.

Terms

a(0) =1a(1) =1a(2) =3a(3) =4a(4) =10a(5) =14a(6) =33a(7) =49a(8) =109a(9) =170a(10) =362a(11) =586a(12) =1207a(13) =2011a(14) =4037a(15) =6878a(16) =13536a(17) =23464a(18) =45475a(19) =79891a(20) =153011a(21) =271612a(22) =515460a(23) =922372a(24) =1738101a(25) =3129565a(26) =5865063a(27) =10611336a(28) =19802382a(29) =35960970