a(n) is the largest number in row n of A380920.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =10a(5) =6a(6) =21a(7) =16a(8) =36a(9) =15a(10) =55a(11) =12a(12) =2080a(13) =56a(14) =105a(15) =64a(16) =1496a(17) =36a(18) =209a(19) =120a(20) =210a(21) =1276a(22) =897a(23) =96a(24) =375a(25) =2080a(26) =351a(27) =210a(28) =42688a(29) =120