Terms in A014217 pairwise swapped.

Terms

a(0) =1a(1) =1a(2) =4a(3) =2a(4) =11a(5) =6a(6) =29a(7) =17a(8) =76a(9) =46a(10) =199a(11) =122a(12) =521a(13) =321a(14) =1364a(15) =842a(16) =3571a(17) =2206a(18) =9349a(19) =5777a(20) =24476a(21) =15126a(22) =64079a(23) =39602a(24) =167761a(25) =103681a(26) =439204a(27) =271442a(28) =1149851a(29) =710646