58752

Appears in sequences

• T(n,4), array T as in A050186; a count of aperiodic binary words.at n=32A050189
• a(n+2) = a(n+1)*a(n)*(a(n+1)+a(n)).at n=4A066091
• Numbers k that divide tau(k)*sigma(k).at n=42A071707
• a(n) = (a(n-1) + a(n-2)) * a(n-1) * a(n-2) with a(0)=1 and a(1)=1.at n=5A100704
• Numbers k such that sigma(k)*phi(k)*k is a square.at n=10A114079
• a(n) = 2*a(n-2) + 4*a(n-3), with initial terms 0, 3, 3.at n=16A134068
• Numbers k such that the product of divisors of sigma(k) is divisible by the product of divisors of k.at n=35A219362
• Number of nondecreasing -n..n vectors of length 3 whose dot product with some lexicographically greater than or equal to nondecreasing -n..n vector equals 3.at n=38A226424
• Number of tilings of a 5 X n rectangle using n pentominoes of shapes L, X.at n=26A234312
• Least zeroless number k such that k^3 contains n zeros.at n=7A241490
• Triangle read by rows: T(n, k) is the smallest x such that the denominator of sigma(x)/x is equal to n and the numerator of sigma(x)/x is congruent to k modulo n.at n=21A242370
• Number of orthogonal 3 X 3 matrices over the ring Z/nZ.at n=33A264083
• Number of n X 6 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.at n=2A269050
• T(n,k)=Number of nXk 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.at n=30A269052
• Number of 3 X n 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.at n=5A269054
• A divisibility sequence: (1/8)*(Pell(4*n) - 2*Pell(2*n)).at n=3A273627
• Numbers n such that the set of prime divisors of n is equal to the set of prime divisors of sum of proper divisors of n while n is not in A027598.at n=16A286876
• Number of degree-n odd permutations of order dividing 8.at n=9A308648
• Expansion of e.g.f. Product_{k>=1} 1 / (1 - arctan(x^k)).at n=7A330537
• Numbers k such that squarefree part of sigma(k) is equal to squarefree part of 2*k.at n=16A331752