65132550

Appears in sequences

• Number of permutations of [n+1] with exactly 1 increasing subsequence of length 3.at n=13A003517
• Row maximum of Catalan triangle with zeros (A053121), i.e., maximum value of (m+1)*binomial(n+1,(n-m)/2)/(n+1) for given n with m same parity as n.at n=31A101461
• a(n) = (18*n)!*(5*n)!*(3*n)!/((10*n)!*(9*n)!*(6*n)!*n!).at n=2A295442
• a(n) = (9*n)!*(5*n/2)!*(3*n/2)!/((5*n)!*(9*n/2)!*(3*n)!*(n/2)!).at n=4A364174
• Arises from enumeration of a certain class of partial zig-zag knight's paths on the square grid.at n=30A368379