73026

Appears in sequences

• Triangle T(n,k), 0<=k<=n, formed from coefficients when formula for n-th diagonal of triangle in A059718 is written as a sum of binomial coefficients.at n=39A059720
• Numbers n such that phi(n) = phi(n-1) - phi(n-2).at n=20A066231
• Smith numbers of order 3.at n=27A178213
• a(n) = Sum_{k=0..n} binomial(n^2 - k^2, n*k - k^2).at n=5A245242