The number of meandering curves of order n.

Terms

a(0) =1a(1) =1a(2) =6a(3) =8a(4) =50a(5) =72a(6) =462a(7) =696a(8) =4536a(9) =7030a(10) =46310a(11) =73188a(12) =485914a(13) =778946a(14) =5202690a(15) =8430992a(16) =56579196a(17) =92470194a(18) =622945970a(19) =1025114180a(20) =6927964218a(21) =11465054942a(22) =77692142980a(23) =129180293184a(24) =877395996200