270920

Appears in sequences

• Inflation orbit counts.at n=25A031367
• a(n) = p*(p - 1), where p is A000043(n).at n=12A139115
• Column 4 of array in A226513.at n=19A226741
• Number of factorizations of the n-th Fibonacci number.at n=59A346491
• Define f(x) = abs(1-1/x) and sequence {b(m)} such that b(m+1) = f(b(m)). a(n) is the number of initial values b(1) such that {b(m)}'s period has length n.at n=25A378853