75174

Appears in sequences

• -1 + number of partitions of n.at n=44A000065
• a(n) = n*(n+1)*(2*n+1).at n=33A055112
• Squarefree positive integers of the form u*v*(u^2-v^2) for some integer u,v.at n=36A147779
• Integer areas of integer-sided triangles where at least one of the three altitudes is of prime length.at n=32A256579
• Number of partitions lambda of n that satisfy gcd(lambda_i, n-1) = 1 for all i and for which the lattice simplex delta(lambda) is an antichain simplex.at n=43A323257
• Numbers k such that d(k) > d(k+1) > d(k+2) > d(k+3) > d(k+4), where d(n) is the number of divisors of n.at n=10A364720
• Area of the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 = A000045(n) and its long leg and hypotenuse are consecutive natural numbers.at n=9A382844
• Number of integer partitions of n not forming an arithmetic progression with offset 0.at n=44A389920