Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n).

Terms

a(0) =2a(1) =9a(2) =35a(3) =85a(4) =203a(5) =325a(6) =547a(7) =911a(8) =1181a(9) =1591a(10) =2347a(11) =2923a(12) =3421a(13) =4151a(14) =5161a(15) =6461a(16) =7693a(17) =8785a(18) =10237a(19) =11789a(20) =13469a(21) =14621a(22) =16523a(23) =19225a(24) =21775a(25) =23669a(26) =25237a(27) =27715a(28) =29891a(29) =34073