29400

Appears in sequences

• a(n) = n!*n*(n-1)*(n-2)/36.at n=7A001810
• Area of more than one Pythagorean triangle.at n=22A009127
• Words over signatures (derived from multisets and multinomials).at n=46A035796
• Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*10^j.at n=12A038276
• Triangle whose (i,j)-th entry is binomial(i,j)*10^(i-j)*7^j.at n=12A038309
• Number of functions from a set to itself such that the sizes of the preimages of the individual elements in the range form the n-th partition in Abramowitz and Stegun order.at n=38A049009
• Triangle of coefficients of polynomials enumerating trees with n labeled nodes by inversions.at n=48A052121
• a(n) = n^2 * phi(n).at n=34A053191
• a(n) = n*(n+1)*(2*n+1).at n=24A055112
• Numbers expressible as (a^2-1)(b^2-1) in at least 2 distinct ways (b>=a>1).at n=20A063067
• (Sum of digits of n)^5 - (sum of digits^5 of n).at n=35A069965
• Numbers k such that the k-th difference between 2 successive primes equals the squarefree part of k.at n=36A078691
• Array of coefficients of denominator polynomials of the n-th approximation of the continued fraction x/(1+x/(2+x/(3+..., related to Laguerre polynomial coefficients.at n=33A084950
• Generalized Stirling2 array (4,3).at n=18A090440
• Numbers that can be expressed as the difference of the squares of primes in exactly five distinct ways.at n=31A092001
• Irregular triangle T(n,k) = A098546(n,k) * A036040(n,k), read by rows, 1 <= k <= A000041(n).at n=56A122454
• Numbers k such that A125650(k) is a perfect square.at n=6A125651
• Triangle read by rows, 1 <= m <= n: t(n,m) = lcm(s(n,m), S(n,m)), where s(n,m) is an unsigned Stirling number of the first kind and S(n,m) is a Stirling number of the second kind.at n=32A128264
• Number of UDL's in all skew Dyck paths of semilength n.at n=9A128730
• Composite numbers such that the square root of the sum of squares of their prime factors is a prime.at n=15A134607