Partial sums of A058313.

Terms

a(0) =1a(1) =2a(2) =7a(3) =14a(4) =61a(5) =98a(6) =417a(7) =950a(8) =2829a(9) =4456a(10) =24873a(11) =42980a(12) =306091a(13) =543462a(14) =595741a(15) =691290a(16) =2459767a(17) =4092108a(18) =37557035a(19) =193242042a(20) =360012409a(21) =516201296a(22) =4341338257a(23) =7943382348a(24) =27024448579a(25) =45075855410a(26) =102204647503a(27) =109956141102a(28) =346222803073a(29) =571398562364