If mod[n,4]=0 then a(n)=a(n-1), if mod[n,4]=1 then a(n)=a(n-2)+a(n-3), if mod[n,4]=2 then a(n)=a(n-3)+a(n-4)+a(n-5), if mod[n,4]=2 then a(n)=a(n-4)+a(n-5)+a(n-6)+a[n-7].
A104205
If mod[n,4]=0 then a(n)=a(n-1), if mod[n,4]=1 then a(n)=a(n-2)+a(n-3), if mod[n,4]=2 then a(n)=a(n-3)+a(n-4)+a(n-5), if mod[n,4]=2 then a(n)=a(n-4)+a(n-5)+a(n-6)+a[n-7].
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =3a(5) =5a(6) =8a(7) =4a(8) =4a(9) =12a(10) =17a(11) =20a(12) =20a(13) =37a(14) =49a(15) =53a(16) =53a(17) =102a(18) =139a(19) =159a(20) =159a(21) =298a(22) =400a(23) =453a(24) =453a(25) =853a(26) =1151a(27) =1310a(28) =1310a(29) =2461
External references
- oeis: A104205