40116601domain: NAppears in sequencesa(n) = binomial(n, floor(n/2)) + 1.at n=28A051920Number of compositions of 3n in which the minimal multiplicity of parts equals n.at n=14A244174a(n) = binomial(2*(n - 1), n - 1) + 1.at n=15A323230a(n) is the smallest base b such that (b+1)^n in base b is a palindrome.at n=27A367857