119780

Appears in sequences

• a(n) = 1 + (the n-th term in sequence A_n, ignoring the offset), or a(n) = -1 if A_n has fewer than n terms.at n=20A102288
• a(n)=(A175580(n)-1)/210.at n=0A175581
• White to move: King, Knight and Bishop vs. King: Number of positions with mate in n.at n=17A274683
• Expansion of Product_{k>=1} (1 + x^k) * (1 + x^(2*k)) * (1 + x^(3*k)) * (1 + x^(4*k)) / ((1 - x^k) * (1 - x^(2*k)) * (1 - x^(3*k)) * (1 - x^(4*k))).at n=19A327049