136314880

Appears in sequences

• a(n) = (2^prime(n) + 2^prime(n+1)) / 4.at n=8A137781
• Encoded symmetrical antidiagonal square binary matrices with either 1 or 2 ones.at n=15A261819
• Values of A007692(n) that are not of the form x^2 + y^2 + z^2 where x, y, z are nonzero integers.at n=21A273123
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 260", based on the 5-celled von Neumann neighborhood.at n=27A280373