Number of base-3 "Punctual Birds" with n base-3 digits.
A132135
Number of base-3 "Punctual Birds" with n base-3 digits.
Terms
- a(0) =2a(1) =3a(2) =4a(3) =10a(4) =20a(5) =51a(6) =133a(7) =359a(8) =975a(9) =2700a(10) =7506a(11) =20962a(12) =58968a(13) =166170
External references
- oeis: A132135