Number of degree n polynomials f with all nonzero coefficients equal to 1 such that f(k) is divisible by 3 for all integers k.

A329479

Number of degree n polynomials f with all nonzero coefficients equal to 1 such that f(k) is divisible by 3 for all integers k.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =6a(7) =15a(8) =30a(9) =66a(10) =121a(11) =242a(12) =462a(13) =903a(14) =1806a(15) =3570a(16) =7225a(17) =14450a(18) =29070a(19) =58311a(20) =116622a(21) =233586a(22) =466489a(23) =932978a(24) =1864590a(25) =3727815a(26) =7455630a(27) =14908530a(28) =29822521a(29) =59645042

External references