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

Terms

a(0) =1a(1) =1a(2) =2a(3) =2a(4) =1a(5) =2a(6) =5a(7) =7a(8) =7a(9) =1a(10) =2a(11) =5a(12) =13a(13) =22a(14) =29a(15) =29a(16) =1a(17) =2a(18) =5a(19) =13a(20) =34a(21) =65a(22) =101a(23) =130a(24) =130a(25) =1a(26) =2a(27) =5a(28) =13a(29) =34