39816

Appears in sequences

• Expansion of theta series of {E_7}* lattice in powers of q^(1/2).at n=40A003781
• Expansion of theta series of E_7 lattice in powers of q^2.at n=10A004008
• Nonzero coefficients in theta series of {E_7}* lattice.at n=20A030443
• Numbers n such that n and n-1 are differences between 2 positive cubes in at least one way.at n=26A038595
• Denominator of B(4n+2)/(8n+4) where B(m) are the Bernoulli numbers.at n=18A043304
• Numbers whose 4th power can be expressed as the sum of two positive cubes in more than one way.at n=15A051388
• Numbers n such that phi(4n+1) = sigma(n).at n=14A067234
• Largest number k such that the reduced totient function psi(k) = A002174(n).at n=30A143407
• Number of binary strings of length n with no substrings equal to 0001 0010 or 1011.at n=19A164450
• Numbers n with property that n and 2n are sums of two distinct positive cubes.at n=13A191345
• Integers n such that each of n, 2n and 3n is a sum of 2 distinct positive cubes.at n=4A191383
• (Denominators of Cauchy numbers of the first kind c_{2n})/6.at n=38A222560
• a(n) is the sum of the divisors of the smallest number k such that the symmetric representation of sigma(k) has n parts.at n=11A266094
• Numbers in A003325 whose 4th power is the sum of two positive cubes in a nontrivial way.at n=9A282872
• Number of integer partitions of n containing three parts (a,b,c) (repeats allowed) such that a + b = c. A variation of sum-full partitions.at n=41A363225