Array read by antidiagonals: the number of directed elements with area n on the lattice T_{2k+1}.

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =1a(5) =0a(6) =4a(7) =4a(8) =1a(9) =0a(10) =8a(11) =19a(12) =6a(13) =1a(14) =0a(15) =16a(16) =96a(17) =46a(18) =8a(19) =1a(20) =0a(21) =32a(22) =501a(23) =376a(24) =85a(25) =10a(26) =1a(27) =0a(28) =64a(29) =2668