Main diagonal of A101866.

Terms

a(0) =5a(1) =20a(2) =34a(3) =65a(4) =106a(5) =136a(6) =193a(7) =233a(8) =306a(9) =389a(10) =445a(11) =544a(12) =653a(13) =725a(14) =850a(15) =932a(16) =1073a(17) =1224a(18) =1322a(19) =1489a(20) =1597a(21) =1780a(22) =1973a(23) =2097a(24) =2306a(25) =2525a(26) =2665a(27) =2900a(28) =3050a(29) =3301