51840

Appears in sequences

• Stirling's formula: denominators of asymptotic series for Gamma function.at n=3A001164
• Sorted list of orders of Weyl groups of types A_n, B_n, D_n, E_n, F_4, G_2.at n=19A001217
• Orders of Weyl groups of type E_n.at n=0A003134
• Order of universal Chevalley group B_n (3).at n=1A003920
• Order of universal Chevalley group B_2(q), q = prime power.at n=1A003931
• Theta series of E_6 lattice.at n=30A004007
• From a problem concerning circulant matrices and Gauss sums.at n=11A007792
• Number of permutations of an n-set containing a 7-cycle.at n=9A029574
• Maximum of different products of partitions of n into distinct parts.at n=37A034893
• Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*9^j.at n=17A038239
• Triangle whose (i,j)-th entry is binomial(i,j)*6^(i-j)*8^j.at n=16A038262
• Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*6^j.at n=19A038284
• Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*4^j.at n=18A038294
• a(0) = a(1) = a(2) = 0; a(n) = n!/(n-2) for n > 2.at n=9A052747
• Sum of divisors of those numbers n such that n and n+1 have the same sum of divisors.at n=14A053215
• Sum of divisors of k such that k and k+1 have the same number and sum of divisors.at n=4A054005
• Triangle of coefficients of x^2 in the Neumann polynomials.at n=27A057869
• Triangle n!/(n-k), 1 <= k < n, read by rows.at n=29A058298
• 12-almost primes (generalization of semiprimes).at n=27A069273
• a(n) = (1/2) * (number of n X n 0..2 matrices M with MM' mod 3 = I, where M' is the transpose of M and I is the n X n identity matrix).at n=4A071302