Number of closed Deutsch paths whose area is exactly n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =6a(6) =11a(7) =21a(8) =36a(9) =64a(10) =117a(11) =208a(12) =371a(13) =669a(14) =1197a(15) =2141a(16) =3844a(17) =6888a(18) =12336a(19) =22119a(20) =39644a(21) =71034a(22) =127323a(23) =228200a(24) =408955a(25) =732957a(26) =1313647a(27) =2354298a(28) =4219447a(29) =7562249