122865

Appears in sequences

• Maximal number of 15432 patterns in a permutation of 1,2,...,n.at n=33A100355
• a(n) = number of set partitions of {1, 2, ..., n} whose blocks consist only of elements that differ by two or less (that is, have only the forms {i}, {i,i+1}, {i,i+2}, or {i,i+1,i+2}).at n=17A129847
• a(n) = f(1,n,n), where f is the Sudan function defined in A260002.at n=13A260006