Number of nodes in row n of the power tree A114622.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =9a(6) =15a(7) =26a(8) =43a(9) =78a(10) =134a(11) =238a(12) =415a(13) =731a(14) =1299a(15) =2299a(16) =4126a(17) =7374a(18) =13257a(19) =23847a(20) =42864a(21) =77366a(22) =140071a(23) =254241a(24) =461967a(25) =839829a(26) =1528072a(27) =2782636a(28) =5076421a(29) =9274937