Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutation A089864.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =2a(6) =4a(7) =5a(8) =10a(9) =14a(10) =28a(11) =42a(12) =84a(13) =132a(14) =264a(15) =429a(16) =858a(17) =1430a(18) =2860a(19) =4862a(20) =9724a(21) =16796a(22) =33592a(23) =58786a(24) =117572a(25) =208012a(26) =416024a(27) =742900a(28) =1485800a(29) =2674440