31635

Appears in sequences

• Number of rooted ordered trees where no branch is identical to its adjacent neighbor.at n=12A106361
• Number of compositions of n such that no part equals any of its two immediate predecessors.at n=23A261962
• Numbers n such that n^3 +/- 2 and 3*n +/- 2 are all prime.at n=3A268475
• Odd composites for which gcd(A325977(n), A325978(n)) is equal to abs(A325977(n)).at n=8A325981
• a(n) is the smallest number which can be represented as the sum of n distinct nonzero squares in exactly n ways, or 0 if no such number exists.at n=43A350241
• a(n) = Sum_{k=0..n} binomial(n,k) * binomial(n+3*k,k).at n=5A388534