20036

Appears in sequences

• Number of trees of diameter 5.at n=23A000147
• Numbers k such that k and k+1 are modest (cf. A054986).at n=13A055018
• Expansion of f(-x, -x^7) / f(-x, -x) in powers of q where f(, ) is Ramanujan's general theta function.at n=31A132212
• Number of nX4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 4 neighboring 1s.at n=7A296537
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 4 neighboring 1s.at n=58A296541
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 or 4 neighboring 1s.at n=62A296541
• 2*a(n) is the least number where k sets a new record such that 2*a(n)-k and 2*a(n)+k are prime and at least one of 2*a(n)-j and 2*a(n)+j is composite for all 0<j<k.at n=24A307881
• Number of unlabeled multigraphs with loops allowed and n edges covering three vertices.at n=23A327728