17972

Appears in sequences

• Nearest integer to Gamma(n + 8/11)/Gamma(8/11).at n=8A020007
• a(n) = floor(Gamma(n + 8/11)/Gamma(8/11)).at n=8A020052
• Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x.at n=8A048131
• Numbers that reach the fixed point 89 under iteration of f(x) = reverse(x) - maxdigit(x).at n=24A097155
• Numbers which do not reach zero under either of the iterations: x -> floor(sqrt(x)) * (x - floor(sqrt(x))^2) or y -> ceiling(sqrt(y)) * (ceiling(sqrt(y))^2 - y).at n=19A219963
• Number of n^2 X n^2 S-permutation matrices that are disjoint from a given one.at n=2A285178
• Numbers that are the sum of eight fourth powers in eight or more ways.at n=19A345583
• Numbers that are the sum of eight fourth powers in nine or more ways.at n=4A345584
• Numbers that are the sum of eight fourth powers in ten or more ways.at n=0A345585
• Numbers that are the sum of eight fourth powers in exactly ten ways.at n=0A345842
• a(n) is the number of subsets x of Z_n such that #x * #y = n and x + y = Z_n for some subset y of Z_n.at n=23A374770