21866

Appears in sequences

• Numbers whose base-2 representation has exactly 14 runs.at n=10A043581
• Number of step shifted (decimated) sequence structures using exactly three different symbols.at n=12A056397
• Number of primitive (aperiodic) step shifted (decimated) sequence structures using exactly three different symbols.at n=12A056407
• Given the infinite continued fraction (1+i)+((1+i)/(1+i)+((1+i)/((1+i)+...)))), where i is the square root of (-1), this is the denominator of the convergents.at n=13A093727
• Number of 2-anisohedral polyominoes of order n.at n=20A120646
• Nodes of tree generated as follows: (1,2) is an edge, and if (x,y) is an edge, then (y,x*y) and (y,x^2 + y^2) are edges.at n=37A228939
• a(n) = 26*n^2.at n=29A244633
• Number of 4 X n 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=8A302152
• Expansion of Product_{k=1..12} theta_3(q^k), where theta_3() is the Jacobi theta function.at n=36A320246
• Number of integer partitions of n such that every set of distinct parts has a different sum.at n=49A325862