261534873600
domain: N
Appears in sequences
- Denominators of coefficients in Taylor series for exp(tan(x)).at n=15A047692
- a(n) = 3*n!.at n=14A052560
- Expansion of e.g.f. (3+2*x)/(1-x^2).at n=14A052616
- Expansion of e.g.f. 3*x^3/(1-x).at n=14A052619
- E.g.f. 3x(1+x-x^2)/(1-x).at n=14A052637
- Let m be the product of the decimal digits in n, then a(n) = 0 if m = 0, otherwise a(n) = n!/m.at n=14A067455
- Denominator of coefficients of power series for exp(exp(x)-1).at n=15A076904
- Number of adjacent pairs of form (odd,odd) among all permutations of {1,2,...,n}.at n=13A077611
- Number of adjacent pairs of form (even,even) among all permutations of {1,2,...,n}.at n=13A077612
- a(n) = A081456(n)^(1/2).at n=22A081457
- Let f(0) = 0, f(1) = 1 and for n > 1 let f(n) = (-1)*sum((-1)^(n+r)*f(r),r=0..n-2)/(n*(n-1)); sequence gives denominator of f(n).at n=15A090765
- Number of runs of length 1 in all permutations of [n]. (The permutation 3574162 has two runs of length 1: 357/4/16/2.)at n=13A097900
- Let x^3/(-1-x+x^3)=Sum[b[n]*x^n/n1,{n,0,Infinity}]; a(n) = Abs[b[n]].at n=14A109583
- a(n) = (n+5)! / 5.at n=10A129923
- Partial products of A027746.at n=23A175943
- a(n) = n! * (prime(n+1) + prime(n)) / (prime(n+1) - prime(n)).at n=12A204676
- Denominators of coefficients in expansion of 1/(1 - sin x).at n=15A279107
- E.g.f.: Product_{m>0} 1/(1 + x^m).at n=14A293300
- E.g.f.: Product_{m>0} (1 + x^(2*m-1)).at n=14A293487
- a(n) = floor(n^2/4)*n!.at n=13A306258