a(n) = Sum_{i=2..n} A055211(i).

Terms

a(0) =3a(1) =10a(2) =21a(3) =34a(4) =51a(5) =80a(6) =103a(7) =146a(8) =187a(9) =260a(10) =319a(11) =366a(12) =455a(13) =522a(14) =595a(15) =702a(16) =791a(17) =892a(18) =1019a(19) =1116a(20) =1199a(21) =1288a(22) =1385a(23) =1636a(24) =1767a(25) =1880a(26) =2031a(27) =2294a(28) =2545a(29) =2768