Number of positive numbers that can be built with n ones using +, -, and *, and require at least n ones.
A348083
Number of positive numbers that can be built with n ones using +, -, and *, and require at least n ones.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =2a(7) =6a(8) =6a(9) =8a(10) =13a(11) =18a(12) =21a(13) =35a(14) =45a(15) =61a(16) =90a(17) =121a(18) =162a(19) =241a(20) =323a(21) =450a(22) =638a(23) =865a(24) =1233a(25) =1698a(26) =2349a(27) =3315a(28) =4592a(29) =6382
External references
- oeis: A348083