19591041024
domain: N
Appears in sequences
- a(n) = 6*a(n-2), starting with 1, 3, 9.at n=26A026565
- a(n)=Product{k=0..n, 1+2^A010060(k)}/2.at n=26A101652
- Integers k such that both k and k^3-1 are the sum of two positive cubes (see A003325).at n=23A271717
- Numbers k such that k^3 is the sum of two positive 7th powers.at n=17A291829
- Maximum number of inverses of an element in the full symmetric semigroup T_n.at n=16A350646
- The sum of the coefficients of x^k in the expansion of (x + x^2 + x^3 + x^4 + x^5 + x^6)^n with k divisible by 4.at n=13A362365