Number of planar Steinhaus graphs with n nodes.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =32a(6) =59a(7) =75a(8) =65a(9) =56a(10) =50a(11) =44a(12) =36a(13) =31a(14) =27a(15) =26a(16) =26a(17) =26a(18) =26a(19) =26a(20) =26a(21) =26a(22) =26a(23) =26a(24) =26a(25) =26a(26) =26a(27) =26a(28) =26a(29) =26