68947200

Appears in sequences

• Expansion of e.g.f.: (1-x^3)/(1-x-x^3).at n=10A052586
• a(n) = (2*n+1)*(n+1)!.at n=9A175925
• Number of minimum dominating sets in the n-triangular honeycomb bishop graph.at n=18A381559
• a(n) is the least k > 1 such that the factorial base expansion of k*n starts with that of n while the remaining digits are zeros.at n=22A382177
• Expansion of e.g.f. exp(x^2/(1-x)^3).at n=9A386514