Main diagonal of A332363.

Terms

a(0) =1a(1) =7a(2) =19a(3) =51a(4) =95a(5) =191a(6) =311a(7) =507a(8) =747a(9) =1135a(10) =1591a(11) =2195a(12) =2879a(13) =3863a(14) =4987a(15) =6399a(16) =7971a(17) =9979a(18) =12187a(19) =14815a(20) =17691a(21) =21307a(22) =25235a(23) =29735a(24) =34579a(25) =40479a(26) =46831a(27) =54019a(28) =61687a(29) =70419