27534

Appears in sequences

• a(n) = 1*t(n) + 2*t(n-1) + ... + k*t(n+1-k), where k=floor((n+1)/2), t = A000045 (Fibonacci numbers).at n=18A023860
• Moebius transform of A000031 (starting at term 0).at n=19A054079
• Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n and having k ascents of length 4 (0<=k<=floor(n/4)). Also number of ordered trees with n edges which have k vertices of outdegree 4.at n=30A114508
• Principal diagonal of the convolution array A213576.at n=9A213577
• Numbers n such that Bernoulli number B_{n} has denominator 3318.at n=19A272383
• Number of ways to write n as an ordered sum of 6 squarefree numbers.at n=25A341066
• Irregular triangle read by rows: T(n,k) is the number of flattened Catalan words of length n with exactly k short peak, with k >= 0.at n=45A372879