757680

Appears in sequences

• Number of labeled rooted trees of height 4 with n nodes.at n=3A000553
• Doubles (index 2+) under "EGJ" (unordered, element, labeled) transform.at n=6A032320
• Triangle read by rows giving number of rooted labeled trees with n >= 2 nodes and height d >= 1.at n=24A034855
• a(n) = n!*(4*n^3 - 30*n^2 + 40*n + 3)/24.at n=4A034863
• a(5) = 5, a(6) = 1170, for n >= 7, a(n) = n!*(4*n^3 - 30*n^2 + 40*n + 3)/24.at n=3A034864
• Numbers that can be expressed as the difference of the squares of primes in exactly thirteen distinct ways.at n=5A092009
• Numbers with prime factorization pqrstu^4.at n=17A190388
• Trajectory of 397 under the map A340008: n -> n/2 if n is even, n-> n^2 - 1 if n is an odd prime, otherwise n -> n - 1.at n=12A340419
• a(0) = 397; a(n+1) = a(n)^2 if a(n) is prime, floor(a(n)/2) otherwise.at n=10A376801