Regular triangle array: number of [0-r]-covering hierarchies with thickness = e.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =6a(5) =4a(6) =1a(7) =14a(8) =22a(9) =8a(10) =1a(11) =30a(12) =86a(13) =64a(14) =16a(15) =1a(16) =62a(17) =294a(18) =346a(19) =168a(20) =32a(21) =1a(22) =126a(23) =938a(24) =1594a(25) =1140a(26) =416a(27) =64a(28) =1a(29) =254