40569

Appears in sequences

• Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 2,1,3.at n=7A037632
• a(n) = Sum[2^(A047260(i)-1), {i,1,n}].at n=9A113828
• Self-convolution square of A001246, which is the squares of Catalan numbers.at n=6A168358
• Number of tilings of a 6 X n rectangle using integer-sided square tiles of area > 1.at n=25A226370
• Number of nX4 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order.at n=5A273967
• T(n,k)=Number of nXk 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order.at n=39A273968
• Table read by antidiagonals: T(m,n) = number of 1-metered (m,n)-parking functions.at n=58A372817