45550

Appears in sequences

• a(n) = n^2*(n^3 - n^2 + n + 1)/2.at n=10A101376
• Starts of runs of 3 consecutive factorial base Niven numbers (A118363).at n=18A328206
• Starts of runs of 3 consecutive Niven numbers in base 2 (A049445).at n=21A330932
• Expansion of e.g.f. Product_{k>=1} 1/(1 - x^prime(k))^(1/prime(k)!).at n=9A352004
• Irregular triangle read by rows: T(n,k) (0 <= k <= n^2) are coefficients of exact wrapping probability for site percolation on an n X n 2D nnsquare lattice with periodic boundary conditions. This is for the probability that it wraps in both dimensions.at n=42A365950