Table of generalized de Bruijn's numbers (A006480) read by ascending antidiagonals.

Terms

a(0) =2a(1) =30a(2) =3a(3) =560a(4) =20a(5) =20a(6) =11550a(7) =210a(8) =75a(9) =210a(10) =252252a(11) =2772a(12) =504a(13) =504a(14) =2772a(15) =5717712a(16) =42042a(17) =4620a(18) =2352a(19) =4620a(20) =42042a(21) =133024320a(22) =700128a(23) =51480a(24) =15840a(25) =15840a(26) =51480a(27) =700128a(28) =3155170590a(29) =12471030