Triangle of numbers arising from analysis of Levine's sequence A011784.

Terms

a(0) =1a(1) =1a(2) =3a(3) =1a(4) =15a(5) =10a(6) =3a(7) =1a(8) =105a(9) =105a(10) =55a(11) =30a(12) =10a(13) =3a(14) =1a(15) =945a(16) =1260a(17) =910a(18) =630a(19) =350a(20) =168a(21) =76a(22) =30a(23) =10a(24) =3a(25) =1a(26) =10395a(27) =17325a(28) =15750a(29) =12880