234360

Appears in sequences

• Theta series of the coset of the E_7 lattice in its dual.at n=20A005931
• Nonzero coefficients in theta series of {E_7}* lattice.at n=41A030443
• a(n) = n^3*(n^3 + 1)*(n-1).at n=6A037251
• Let A(n) be the matrix in the group GL(n,2) such that for 1<=i, j<=n: A[i,j] = 1 if i+j = n+1 A[i,j] = 0 if i+j != n+1. a(n) is the size of the conjugacy class of A(n) in GL(n,2).at n=5A087918
• a(n) = p(n)/p(n-1), where p(n) = ( floor(n*log(n)) / Product_{j=2..pi(floor(n*log(n)))} prime(j) )!.at n=19A088301
• Integers that can be expressed as a product of triangular numbers in 3 different ways.at n=9A110904
• Column 2 of triangle A125653; also equals the eigensequence of the matrix square of A125653.at n=10A125655
• Numbers with prime factorization pqrs^3t^3.at n=11A190385
• Triangle read by rows: T(n,m) (n>=0, 1 <= m <= n+1) = number of unlabeled rigid interval posets with n non-maximal and m maximal elements.at n=43A193344
• Triangle read by rows: T(n,k) is the number of surjective linear mappings from an n-dimensional vector space over F_2 onto a k-dimensional vector space, n>=0, 0<=k<=n.at n=24A288853
• Number of nonisomorphic proper colorings of partition multicycle graph using six colors.at n=93A298266
• Numbers whose infinitary divisors have a mean infinitary abundancy index that is larger than 2.at n=27A374788
• E.g.f. satisfies A(x) = exp( x^3 * A(x) / (1-x)^2 ) / (1-x).at n=7A378095
• Number of 2n X 2n matrices M over GF(2) such that the column space of M is equal to the null space of M.at n=3A384038