Row 3 of array in A114999.

Terms

a(0) =0a(1) =6a(2) =16a(3) =31a(4) =50a(5) =75a(6) =103a(7) =137a(8) =175a(9) =218a(10) =265a(11) =318a(12) =374a(13) =436a(14) =502a(15) =573a(16) =648a(17) =729a(18) =813a(19) =903a(20) =997a(21) =1096a(22) =1199a(23) =1308a(24) =1420a(25) =1538a(26) =1660a(27) =1787a(28) =1918a(29) =2055