66339

Appears in sequences

• Sums of 3 distinct powers of 9.at n=19A038488
• Odd numbers divisible by exactly 8 primes (counted with multiplicity).at n=20A046321
• Numbers whose 4th power can be expressed as the sum of two positive cubes in more than one way.at n=21A051388
• a(2*n+1) = 9*a(n), a(2*n+2) = 10*a(n) + a(n-1).at n=39A116555
• Expansion of (1+8*x+72*x^2+648*x^3)/(1-x-6561*x^4).at n=5A158779
• Numbers n with property that n and 2n are sums of two distinct positive cubes.at n=16A191345
• Integers n such that each of n, 2n and 3n is a sum of 2 distinct positive cubes.at n=5A191383
• Number of nX6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=3A207715
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=39A207717
• Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=5A207719
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y<3z.at n=18A212508
• Degrees of irreducible representations of orthogonal group O8-(3).at n=39A214474
• Series reversion of x - 3*x^3.at n=5A217363
• Number of nonnegative integers with property that their base 9/2 expansion (see A024650) has n digits.at n=6A245416
• Numbers in A003325 whose 4th power is the sum of two positive cubes in a nontrivial way.at n=11A282872
• a(n) is the smallest number m such that gcd(m, tau(m), sigma(m), pod(m)) = n where tau(k) is the number of divisors of k (A000005), sigma(k) is the sum of divisors of k (A000203) and pod(k) is the product of divisors of k (A007955).at n=6A337324
• a(n) is the smallest number m such that gcd(tau(m), sigma(m), pod(m)) = n where tau(k) is the number of divisors of k (A000005), sigma(k) is the sum of divisors of k (A000203) and pod(k) is the product of divisors of k (A007955).at n=6A337325
• Number of regular polygons that can be drawn with vertices on a centered hexagonal grid with side length n.at n=13A339483
• Numbers that are the sum of four third powers in nine or more ways.at n=32A345146
• Numbers that are the sum of four third powers in exactly nine ways.at n=17A345154