2117682

Appears in sequences

• a(n) = binomial(n+4, 4)*7^n.at n=5A139641
• The number of descents over all functions f:{1,2,...,n}->{1,2,...,n}.at n=6A226998
• Partition array in Abramowitz-Stegun order for the number of ways of putting n stones into a rectangular m X n grid of squares such that each of the m rows contains at least one stone.at n=42A258152
• Triangle T(n,m) for the number of ways to put n stones into an m X n square grid such that each of the m rows contains at least one stone.at n=26A259051
• a(n) = n*(n + 7)*(n + 14)*(n + 21)*(n + 28)/120.at n=35A264449
• Positive integers k = p_1^e_1*p_2^e_2*p_3^e_3, such that the points (p_1, e_1), (p_2, e_2) and (p_3, e_3) lie on a straight line with nonzero slope.at n=31A389340