a(1) = 1, a(2) = 0; for n > 2, a(n) = n*Fibonacci(n-2) (with the convention Fibonacci(0)=0, Fibonacci(1)=1).

A006490

a(1) = 1, a(2) = 0; for n > 2, a(n) = n*Fibonacci(n-2) (with the convention Fibonacci(0)=0, Fibonacci(1)=1).

Terms

    a(0) =1a(1) =0a(2) =3a(3) =4a(4) =10a(5) =18a(6) =35a(7) =64a(8) =117a(9) =210a(10) =374a(11) =660a(12) =1157a(13) =2016a(14) =3495a(15) =6032a(16) =10370a(17) =17766a(18) =30343a(19) =51680a(20) =87801a(21) =148830a(22) =251758a(23) =425064a(24) =716425a(25) =1205568a(26) =2025675a(27) =3399004a(28) =5696122a(29) =9534330

External references