Diagonal sums of number triangle A113582.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =12a(6) =23a(7) =43a(8) =74a(9) =124a(10) =195a(11) =300a(12) =441a(13) =637a(14) =890a(15) =1226a(16) =1647a(17) =2187a(18) =2848a(19) =3673a(20) =4664a(21) =5874a(22) =7305a(23) =9021a(24) =11024a(25) =13390a(26) =16121a(27) =19306a(28) =22947a(29) =27147