If n==0 (mod 3) then a(n)=a(n-1); if n==1 (mod 3) then a(n)=a(n-2)+a(n-3); if n==2 (mod 3) then a(n)=a(n-3)+a(n-4)+a(n-5).
A104204
If n==0 (mod 3) then a(n)=a(n-1); if n==1 (mod 3) then a(n)=a(n-2)+a(n-3); if n==2 (mod 3) then a(n)=a(n-3)+a(n-4)+a(n-5).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =4a(6) =4a(7) =9a(8) =12a(9) =12a(10) =21a(11) =25a(12) =25a(13) =46a(14) =58a(15) =58a(16) =104a(17) =129a(18) =129a(19) =233a(20) =291a(21) =291a(22) =524a(23) =653a(24) =653a(25) =1177a(26) =1468a(27) =1468a(28) =2645a(29) =3298
External references
- oeis: A104204