13305600

Appears in sequences

• a(n) = n! / 3.at n=8A002301
• Triangle of coefficients in expansion of D^n (tan x) in powers of tan x.at n=39A008293
• Number of labeled Abelian groups with a fixed identity.at n=11A058162
• Triangle of nonzero coefficients of Hermite polynomials H_n(x) in increasing powers of x.at n=44A059343
• a(n) = total number of occurrences of the consecutive pattern 1324 in all permutations of [n+3].at n=7A061206
• Denominator of (-1)^n*n!*(E(n,2)-E(n,1)*E(n-1,1)) where E(n,x) = Sum_{k=0..n} (-1)^k*x^k/k!.at n=14A065953
• Denominators of the coefficients in exp(x/(1-x)) power series.at n=11A067653
• n! divided by prime whose index is the integer part of log(n).at n=8A089057
• Denominator of the expansion of e^(x + x^2 + x^3 + x^4).at n=11A090755
• Denominators of terms in series expansion of arctan(arcsin(x)).at n=5A096720
• a(n)=Max{ (i+j)!/i!^2 | 0<=i,j<=n }.at n=9A096769
• Triangle read by rows: nonzero coefficients of the polynomials F_n(x) which express derivatives of tan(z) in terms of powers of tan(z).at n=36A101343
• a(1) = 1. For n >= 2, a(n) = sum of the two (not necessarily distinct) earlier terms, a(j) and a(k), which maximizes d(a(j)+a(k)), where d(m) is the number of positive divisors of m. a(n) = the maximum (a(j)+a(k)) if more than one such sum has the maximum number of divisors.at n=29A115386
• Triangle T(n,k) = n!/(k!*(n-3*k)!), for n >= 3*k >= 0, read by rows.at n=33A118394
• Triangular sequence based on A002301 and the alternating groups a prime -adic: t(n,m)=n!/Prime[m] for n>=Prime[m].at n=28A129925
• T(n,k) is the number of permutations of [n] with maximum descent k, T(n,k) for n >= 0 and 0 <= k <= n, triangle read by rows.at n=64A130477
• Triangle of unsigned 2-Lah numbers.at n=37A143497
• Denominator of (Sum_{k=1..n} k^3)/n!.at n=12A156034
• Triangle read by rows: T[n,m] = quadruple factorials A001813(n) * binomials A007318(n,m).at n=24A164961
• Number of permutations of 1..n with the sequence of sums of 5 adjacent elements having exactly 3 maxima.at n=3A179726