163800

Appears in sequences

• Degrees of irreducible representations of Suzuki group Suz.at n=35A003902
• Unitary harmonic numbers (those for which the unitary harmonic mean is an integer).at n=27A006086
• Numbers k such that sigma(k) >= 4*k.at n=25A023198
• a(n) = 5*(n+1)*binomial(n+2, 5)/2.at n=11A027778
• a(n) = 6*(n+1)*binomial(n+2,12).at n=4A027785
• Number of diagonal dissections of an n-gon into 3 regions.at n=35A033275
• E.g.f. 1/((1-x)(1-4x)).at n=5A052654
• Triangle read by rows, T(n, k) = Sum_{i=0..n} L'(n, n-i) * binomial(i, k), for k = 0..n-1.at n=25A059374
• Infinitary harmonic numbers: harmonic mean of infinitary divisors is an integer.at n=21A063947
• Numbers k such that sigma(k) > 4*k.at n=23A068404
• Denominators of expansion of 1/x+1/log(1-x).at n=24A075178
• Generalized Stirling2 array (4,3).at n=31A090440
• Array read by rows: T(n,k) = binomial(n+k-2,k-1)*binomial(2*n-1,n-k).at n=31A091811
• Numbers k such that k = sigma(d_1!!*d_2!!*...*d_j!!) where d_1 d_2 ... d_j is the decimal expansion of k.at n=1A110072
• Binet's factorial series. Denominators of the coefficients of a convergent series for the logarithm of the Gamma function.at n=23A122253
• Product of the primitive roots of prime(n).at n=7A123475
• a(n) = -A141055(n)/(n+1)!.at n=22A141321
• a(n) = n*(n+1)*(n+2)*(n+3)/3.at n=25A162668
• Numbers with prime factorization pqr^2s^2t^3.at n=1A190386
• Number of (n+2) X 5 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=9A202197