196601

Appears in sequences

• Numbers k such that the concatenation of k with 4*k gives a square.at n=30A115535
• Partial sums of A162396.at n=28A164120
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 251", based on the 5-celled von Neumann neighborhood.at n=8A271017
• a(2*n) = 9*2^n - 7, a(2*n+1) = 3*2^(n+2) - 7.at n=29A354789