183139

Appears in sequences

• Expansion of 1/(1 - x - x^2 + x^10 - x^12).at n=26A225396
• a(n) = Sum_{i = 1..n} 2^(n - i) * A000002(i).at n=17A329361
• a(n) = Sum_{k=1..n-1} k^2*phi(k) + n^2*phi(n)/2, where phi = A000010.at n=31A333293