130916

Appears in sequences

• a(n) = [ a(n-1)/a(1) ] + [ a(n-2)/a(2) ] + ... + [ a(1)/a(n-1) ], for n >= 3.at n=29A022876
• G.f. satisfies: A(x) = (4 + A(x)^3) / (5 - 4*x).at n=6A244627
• Number T(n,k) of set partitions of [n] such that the maximal absolute difference between the least elements of consecutive blocks equals k; triangle T(n,k), n>=0, 0<=k<=max(n-1,0), read by rows.at n=60A287215
• Number of set partitions of [n] such that the maximal absolute difference between the least elements of consecutive blocks equals four.at n=7A322877
• Number of block-separated overpartitions of n.at n=34A390048