Antidiagonal sums of the convolution array A213768.

Terms

a(0) =1a(1) =7a(2) =23a(3) =58a(4) =126a(5) =250a(6) =467a(7) =837a(8) =1457a(9) =2484a(10) =4172a(11) =6932a(12) =11429a(13) =18739a(14) =30603a(15) =49838a(16) =81002a(17) =131470a(18) =213175a(19) =345425a(20) =559461a(21) =905832a(22) =1466328a(23) =2373288a(24) =3840841a(25) =6215455a(26) =10057727a(27) =16274722a(28) =26334102a(29) =42610594