492284

Appears in sequences

• The sum over all bitstrings b of length n with at least two runs of the number of runs in b not immediately followed by a longer run.at n=15A208903
• Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having directed index change -1,1 0,-1 0,1 or 1,0.at n=11A264508
• Number of series-reduced rooted trees with n leaves spanning an initial interval of positive integers.at n=6A316651