Fourth convolution of A000129(n+1) (generalized (2,1)-Fibonacci, called Pell numbers), n>=0, with itself.

A073381

Fourth convolution of A000129(n+1) (generalized (2,1)-Fibonacci, called Pell numbers), n>=0, with itself.

Terms

    a(0) =1a(1) =10a(2) =65a(3) =340a(4) =1555a(5) =6482a(6) =25235a(7) =93200a(8) =330070a(9) =1129580a(10) =3756950a(11) =12197320a(12) =38787770a(13) =121148300a(14) =372476410a(15) =1129367632a(16) =3382133695a(17) =10016694470a(18) =29370557375a(19) =85341915260a(20) =245939376949a(21) =703423066190

External references