291016

Appears in sequences

• Number of nX5 arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out straight through or left turns.at n=4A221798
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or vertical neighbor, without move-in move-out straight through or left turns.at n=40A221800
• Number of achiral polyomino rings of length 4n with fourfold rotational symmetry.at n=33A324409
• Number of achiral polyomino rings of length 4n with fourfold rotational symmetry.at n=34A324409
• Numbers that can be written in exactly three different ways as s_1^x_1 + ... + s_t^x_t, with 1 < s_1 < ... < s_t and {s_1,..., s_t} = {x_1,..., x_t} for some t > 0.at n=33A386967