a(n) = a(n-1) + 2*a(n-2) - a(n-3) - a(n-4) + 2*a(n-5) - 2*a(n-7) for n>7 and where a(0)=2, a(1)=3, a(2)=6, a(3)=10, a(4)=17, a(5)=29, a(6)=51.
A285665
a(n) = a(n-1) + 2*a(n-2) - a(n-3) - a(n-4) + 2*a(n-5) - 2*a(n-7) for n>7 and where a(0)=2, a(1)=3, a(2)=6, a(3)=10, a(4)=17, a(5)=29, a(6)=51.
Terms
- a(0) =2a(1) =3a(2) =6a(3) =10a(4) =17a(5) =29a(6) =51a(7) =90a(8) =160a(9) =282a(10) =499a(11) =881a(12) =1559a(13) =2758a(14) =4880a(15) =8634a(16) =15275a(17) =27025a(18) =47815a(19) =84598a(20) =149680a(21) =264826a(22) =468555a(23) =829009a(24) =1466759a(25) =2595126a(26) =4591536a(27) =8123770a(28) =14373323a(29) =25430609
External references
- oeis: A285665