27622

Appears in sequences

• Becomes prime or 4 after exactly 9 iterations of f(x) = sum of prime factors of x.at n=21A048131
• 75-gonal numbers: a(n) = n*(73*n-71)/2.at n=28A098230
• In decimal expansion of exp(Pi), positions of 10-digit partitions containing exactly 10 distinct digits.at n=4A104791
• G.f. satisfies: A(x) = 1 + (eta(x^2*A(x)^2)^10 / (eta(x*A(x))^4 * eta(x^4*A(x)^4)^4) - 1)/4, where eta(q) is the Dedekind eta function without the q^(1/24) factor.at n=11A202135
• Number of set partitions of [n] having the maximal possible number of pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.at n=47A270967
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 397", based on the 5-celled von Neumann neighborhood.at n=34A271691