115199

Appears in sequences

• a(n) = 72*n^2 - 1.at n=39A158738
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 569", based on the 5-celled von Neumann neighborhood.at n=16A289409
• Sum of the legs of the unique primitive Pythagorean triple whose inradius is A002315(n) and such that its long leg and its hypotenuse are consecutive natural numbers.at n=3A379509
• Number of compositions of n such that the odd parts are weakly increasing.at n=20A385604