Triangle read by rows: odd-numbered rows of A106580.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =3a(6) =1a(7) =2a(8) =5a(9) =9a(10) =12a(11) =12a(12) =1a(13) =2a(14) =5a(15) =13a(16) =26a(17) =41a(18) =53a(19) =53a(20) =1a(21) =2a(22) =5a(23) =13a(24) =34a(25) =73a(26) =129a(27) =194a(28) =247a(29) =247