56447

Appears in sequences

• Number of odd integers <= 2^n of form x^2 + y^2.at n=18A000074
• Numerators of continued fraction convergents to sqrt(167).at n=7A041308
• Numerators of continued fraction convergents to sqrt(668).at n=7A042284
• Number of permutations of length n which avoid the patterns 2134, 3421, 4132.at n=13A116833
• a(n) = 72*n^2 - 1.at n=27A158738
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 873", based on the 5-celled von Neumann neighborhood.at n=35A273709
• Numerator of best rational approximation x/y of sqrt(k), y<=k, with k given by A306972. The corresponding denominators are given in A306974.at n=40A306973
• Reversal of base-n digits of largest prime < n^3.at n=40A329931
• Sum of the legs of the unique primitive Pythagorean triple whose inradius is the n-th prime and whose short leg is an odd number.at n=38A382097