583200
domain: N
Appears in sequences
- Arithmetic progression of at least 5 terms having the same value of phi start at these numbers.at n=2A050515
- An arithmetic progression of at least 6 terms having the same value of phi starts at these numbers.at n=0A050518
- For n>3: a(n) is a multiple of three distinct earlier terms.at n=36A060301
- Initial values for f(x)=phi(sigma(x)) such that iteration of f ends in a cycle of length 18.at n=24A096890
- Triangle of the value of Bell polynomials of the second kind B(n,m)(6,30,120,360,720,720) in row n, column m.at n=19A188062
- Triangle read by rows: T(n,k) is number of ways of arranging n indistinguishable points on an n X n square grid such that k rows contain at least one point.at n=19A258371
- Number of permutations of n elements divided by the number of 5-ary heaps on n+1 elements.at n=39A273733
- Intersection of A001694 and A195069.at n=29A316499
- Square array T(n,k), n >= 1, k >= 1, read by antidiagonals, where T(n,k) = Product_{a=1..n-1} Product_{b=1..k} (4*sin(a*Pi/n)^2 + 4*sin((2*b-1)*Pi/(2*k))^2).at n=18A341739
- Positions of records in A116488.at n=37A342869
- Numbers k such that, in the prime factorization of k, the least common multiple of the exponents equals the least common multiple of the prime factors.at n=35A356433