31119

Appears in sequences

• Least m such that reverse(sigma(m)) = sigma(m+n).at n=41A071813
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + n^(n-1) * binomial(n-2, k-1) otherwise.at n=23A146990
• Triangle, read by rows, T(n, k) = binomial(n, k) for n < 2 and binomial(n, k) + n^(n-1) * binomial(n-2, k-1) otherwise.at n=25A146990
• a(n) = Sum_{k=1..n} (k^2*floor(k/2)).at n=21A285188