a(n) = ((F(n-1)+F(n-2))-1)/2 if F(n) is odd, otherwise a(n) = ((F(n-1)+F(n-2))-2)/2, where F(n) = A000045(n) is the n-th Fibonacci number.

A201864

a(n) = ((F(n-1)+F(n-2))-1)/2 if F(n) is odd, otherwise a(n) = ((F(n-1)+F(n-2))-2)/2, where F(n) = A000045(n) is the n-th Fibonacci number.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =3a(6) =6a(7) =10a(8) =16a(9) =27a(10) =44a(11) =71a(12) =116a(13) =188a(14) =304a(15) =493a(16) =798a(17) =1291a(18) =2090a(19) =3382a(20) =5472a(21) =8855a(22) =14328a(23) =23183a(24) =37512a(25) =60696a(26) =98208a(27) =158905a(28) =257114a(29) =416019

External references