Odd bisection of A277020: a(n) = A277020(2n+1).

Terms

a(0) =1a(1) =5a(2) =13a(3) =21a(4) =45a(5) =93a(6) =109a(7) =85a(8) =173a(9) =477a(10) =957a(11) =733a(12) =749a(13) =1501a(14) =877a(15) =341a(16) =685a(17) =3549a(18) =12221a(19) =7133a(20) =14269a(21) =49021a(22) =28605a(23) =5853a(24) =5869a(25) =30685a(26) =61373a(27) =23517a(28) =12013a(29) =24029