Number of binary palindromes of length 2n+1 having no (7/3)+ powers.

Terms

a(0) =2a(1) =2a(2) =2a(3) =2a(4) =2a(5) =2a(6) =4a(7) =6a(8) =6a(9) =4a(10) =6a(11) =10a(12) =10a(13) =12a(14) =16a(15) =20a(16) =20a(17) =26a(18) =34a(19) =46a(20) =50a(21) =60a(22) =68a(23) =88a(24) =112a(25) =134a(26) =166a(27) =196a(28) =240a(29) =288