124320

Appears in sequences

• Number of independent components for a Weyl tensor in n dimensions.at n=32A052472
• Saint-Exupéry numbers: ordered products of the three sides of Pythagorean triangles.at n=33A057096
• Binomial (Binomial (n,2), 3) - Binomial (Binomial (n,3), 2).at n=14A093567
• Number of ways to change three non-identical letters in the word aabbccdd..., where there are n types of letters.at n=35A102860
• A symmetrical triangle based on Stirling numbers of the second kind :q=2;t(n,m,q)=If[m == 0 Or m == n, 1, If[Floor[n/2] greater than or equal to m, StirlingS2[ n, m]*q^m, StirlingS2[n, n - m]*q^(n - m)]].at n=49A174545
• A symmetrical triangle based on Stirling numbers of the second kind :q=2;t(n,m,q)=If[m == 0 Or m == n, 1, If[Floor[n/2] greater than or equal to m, StirlingS2[ n, m]*q^m, StirlingS2[n, n - m]*q^(n - m)]].at n=50A174545
• Numbers with prime factorization pqrst^5.at n=14A190383
• Column 4 of array in A226513.at n=15A226741
• Triangular array read by rows. T(n,k) = A008277(n,k)*2^k; n >= 1, 1 <= k <= n.at n=39A227450
• Smallest k such that A002522(k) and A002522(k+2n) are successive primes of the form m^2+1.at n=37A245463
• a(n) is the first term k of A329902 for which A056239(k) = n.at n=26A330743
• Primorial deflation of A133411(n), where A133411(n) is the smallest highly composite number of the form k*a(n-1) where k is an integer greater than 1.at n=26A330744
• Expansion of e.g.f. 1 / (1 + x^2 * log(1 - x))^2.at n=8A375639