76608

Appears in sequences

• Expansion of ( Sum_{k>=0} k*q^(k^2) )^8.at n=42A037217
• Gaps of 8 in sequence A038593 (lower terms).at n=29A038655
• Number of pairs of cycles of cardinality at least 3.at n=9A052519
• a(n) = n*(n-1)*(n-3)*(n-5).at n=19A062765
• Triangle read by rows: T(n, m) = number of forests with n nodes and m labeled trees. Also number of forests with exactly n - m edges on n labeled nodes.at n=30A105599
• Sigma(A033631(n)) {sigma is the sum of divisors function A000203}.at n=13A115619
• Values of n*d(k)*sopf(k) associated with A134382.at n=23A134386
• Triangle read by rows: T(n, k) is the number of forests on n labeled nodes with k edges. T(n, k) for n >= 1 and 0 <= k <= n-1.at n=33A138464
• G.f.: A(x) = exp( 2*Sum_{n>=1} sigma(n)*A006519(n) * x^n/n ), where A006519(n) = highest power of 2 dividing n.at n=15A162584
• A bisection of A162584.at n=7A163229
• Numbers with prime factorization pqr^2s^6.at n=13A190474
• v(n+1)/v(n), where v=A203530.at n=3A203532
• Number of forests with three connected components in the complete graph K_{n}.at n=7A239910
• Consider numbers n = concat(x,y,z) such that the product x*y*z | n. Leading zeros in y and z allowed. Sequence lists numbers that admit different concatenations.at n=12A256518
• Expansion of e.g.f. 1 / (1 + x + x^2/2 + x^3/3 + log(1 - x)).at n=9A355285
• sqrt(a(n)) / 4 is the maximum area of any triangle with integer side lengths whose perimeter is n, or a(n) = -1 if there is no such triangle.at n=38A387833