Triangle A060058 by diagonals.

Terms

a(0) =1a(1) =1a(2) =1a(3) =5a(4) =5a(5) =1a(6) =61a(7) =61a(8) =14a(9) =1a(10) =1385a(11) =1385a(12) =331a(13) =30a(14) =1a(15) =50521a(16) =50521a(17) =12284a(18) =1211a(19) =55a(20) =1a(21) =2702765a(22) =2702765a(23) =663061a(24) =68060a(25) =3486a(26) =91a(27) =1a(28) =199360981a(29) =199360981