102050

Appears in sequences

• Number of M-sequences from multicomplexes on at most 5 variables with no monomial of degree greater than n.at n=6A007065
• Number of regions in regular n-gon with all diagonals drawn.at n=40A007678
• Triangle a(n,k) of number of M-sequences read by antidiagonals.at n=72A007723
• Number of permutations that are n-2 "block reversals" away from 12...n.at n=10A007973
• Duplicate of A007065.at n=6A011802
• Number of M-sequences m_0,...,m_5 with m_1 < n.at n=5A011821
• Integer part of log(n!)^(1 + log(1 + log(1 + n))).at n=36A062445
• Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero.at n=20A297882
• Number of regions in a polygon whose boundary consists of n+2 equally spaced points around the arc of a semicircle. See Comments for precise definition.at n=38A333643
• a(n) = A007678(2*n+1).at n=20A341735