Row 3 of array in A047666.

Terms

a(0) =3a(1) =10a(2) =25a(3) =52a(4) =95a(5) =158a(6) =245a(7) =360a(8) =507a(9) =690a(10) =913a(11) =1180a(12) =1495a(13) =1862a(14) =2285a(15) =2768a(16) =3315a(17) =3930a(18) =4617a(19) =5380a(20) =6223a(21) =7150a(22) =8165a(23) =9272a(24) =10475a(25) =11778a(26) =13185a(27) =14700a(28) =16327a(29) =18070