374976

Appears in sequences

• Least sum of 4 distinct positive cubes in exactly n ways.at n=17A025421
• Numbers n which when converted to base 5, reversed and converted back to base 10 yield a number m such that n mod m = 0. Cases which are trivial or result in digit loss are excluded.at n=27A091079
• Initial terms of chains consisting of four consecutive integers, for none of which is the value of sigma-function divisible by six.at n=18A097020
• Number of subsets of the n-th roots of unity summing to a real number.at n=27A107848
• Sigma(A033631(n)) {sigma is the sum of divisors function A000203}.at n=37A115619
• a(n) = AlexanderPolynomial[n] defined as Det[Transpose[S]-n S] where S is Kronecker Product of two 2 X 2 Seifert matrices {{-1, 1}, {0, -1}} [X] {{-1, 1}, {0, -1}} = {{1, -1, -1, 1}, {0, 1, 0, -1}, {0, 0, 1, -1}, {0, 0, 0, 1}}.at n=25A138849
• E.g.f. A(x) satisfies A(x) = x * (1 + A(x)) * exp( A(x) * (1 + A(x)) ).at n=5A178920
• Average of amicable pairs (x,y), ordered by the smaller value x given in A002025.at n=24A275315
• Average of amicable pairs (x,y), ordered by the sum x+y given in A259953.at n=24A275316