a(n) = sum of the squares of the coefficients of x^n in x^(n-2k)*A(x^2)^(n-2k), as k varies from 0 to floor(n/2), with a(0)=1.

A095892

a(n) = sum of the squares of the coefficients of x^n in x^(n-2k)*A(x^2)^(n-2k), as k varies from 0 to floor(n/2), with a(0)=1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =11a(6) =26a(7) =66a(8) =173a(9) =469a(10) =1307a(11) =3676a(12) =10506a(13) =30260a(14) =87922a(15) =256990a(16) =756381a(17) =2236409a(18) =6648893a(19) =19846902a(20) =59507503a(21) =179051839a(22) =540778436a(23) =1638019284a(24) =4977317066a(25) =15162490432a(26) =46314401884a(27) =141773634376a(28) =434993794258

External references