164880

Appears in sequences

• Number of permutations on n letters that have only cycles of length 5 or less.at n=9A070946
• Number of (w,x,y,z) with all terms in {0,...,n} and at least one of these conditions holds: w=R, x=R, y=R, z<R, where R = max{w,x,y,z} - min{w,x,y,z}.at n=22A212751
• Positive numbers m such that m^2 - 1 divides 4^m - 1.at n=41A271842
• E.g.f.: Product_{k>=1} (1 - x^k/k).at n=11A292359
• Triangle read by rows: T(n,k) is the number of permutations in S_n for which all cycles have length <= k.at n=40A330858