55978

Appears in sequences

• Binomial transform of A061800.at n=13A086954
• a(n) = (n + 2/3)*2^(n-1) - 1/2 - (-1)^(n-1)*(1/6).at n=12A127980
• Irregular table whose rows list the nontrivial cycles of the ghost iteration A329201, starting with the smallest member.at n=16A329342
• The number of semi-meanders with n top arches and concentric arches within the starting arch or a starting arch with length one.at n=13A330269