G.f. A(x) equals the series obtained by removing all factors of 2 from the coefficients in 1 + x*A(x)^2.
A378577
G.f. A(x) equals the series obtained by removing all factors of 2 from the coefficients in 1 + x*A(x)^2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =3a(4) =1a(5) =9a(6) =13a(7) =55a(8) =5a(9) =201a(10) =309a(11) =1467a(12) =541a(13) =7009a(14) =10905a(15) =53103a(16) =2493a(17) =232713a(18) =369973a(19) =1895875a(20) =711901a(21) =10057761a(22) =15917809a(23) =80998215a(24) =7682147a(25) =389278901a(26) =625035439a(27) =3285433779a(28) =1245382467a(29) =18187624005
External references
- oeis: A378577