23908

Appears in sequences

• a(n) = [ a(n-1)/a(1) ] + [ a(n-3)/a(3) ] + [ a(n-5)/a(5) ] + ..., for n >= 3.at n=41A022872
• Decimal part of n-th root of a(n) starts with digit 7.at n=17A034084
• 1-sequence of reduction of (n^2+n+1) by x^2 -> x+1.at n=11A192142
• Numbers that are the sum of eight fourth powers in ten or more ways.at n=31A345585
• a(n) = Sum_{k=1..n} sigma_2(k) * floor(n/k).at n=35A356042