42650

Appears in sequences

• Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 2,2,1.at n=7A037561
• Consider the figure made up of a row of n adjacent congruent rectangles, with diagonals of all possible rectangles drawn; a(n) = number of interior vertices where exactly three lines cross.at n=40A336489
• Numbers k such that k and k+1 are both divisible by the total binary weight of their divisors (A093653).at n=18A338514
• Triangle read by rows: T(n,k) is the number of k-dimensional faces of the n-dimensional Kunz cone, 0 <= k <= n.at n=60A364856