5748019200

Appears in sequences

• a(n) = n*n! = (n+1)! - n!.at n=12A001563
• a(n) = n!*Fibonacci(n+1).at n=11A005442
• E.g.f. 1/(1-x^2-x^3).at n=12A052597
• E.g.f. x^2*(1+x-x^2)/(1-x)^2.at n=12A052633
• a(2) = 6, otherwise a(n) = n*n!.at n=12A052655
• a(n) = 2*n*(2*n)!.at n=6A062779
• Number of integers in {1, 2, ..., n!} that are coprime to n.at n=12A074930
• Number of degree-n permutations with (mutually) relatively prime cycle lengths.at n=12A079128
• a(1) = 1, a(n+1) = n*n! for n >= 1.at n=12A094258
• Sum of all possible sums formed from all but one of the previous terms, starting 1.at n=13A094304
• Number of permutations on [n] that are the n-th power of a permutation.at n=13A247009
• Denominator of Bernoulli(2n)/(2n!).at n=13A255506
• a(n) = n! * [x^n] exp(Sum_{k=1..n, gcd(n,k) = 1} x^k / k).at n=13A335088
• Number of minimum vertex colorings in the complement of the path graph on n nodes.at n=22A371210