67604

Appears in sequences

• Number of cycles induced by iterating the Gray-coding of an n-bit number: a(n+1) = a(n) + 2^n/C_n, where C_n = least power of 2 >= n (C_n is the length of the cycle), with a(0) = 1.at n=21A007886
• Define the sequence UD(a(0),a(1)) by a(n) is the least integer such that a(n)/a(n-1) > a(n-1)/a(n-2)+1 for even n >= 2 and such that a(n)/a(n-1) > a(n-1)/a(n-2) for odd n>=2. This is UD(2,16).at n=5A022018
• The q-exponential of x, e_q(x,q), evaluated at q = -x.at n=24A152398
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 150", based on the 5-celled von Neumann neighborhood.at n=8A270322