2748416

Appears in sequences

• a(n) = n*(1 + n^2)*2^n.at n=10A119635
• a(n) = Sum_{k=0..floor((n-1)/2)} (3^k-1)*binomial(n, 2*k+1).at n=13A176758
• a(n) is the numerator of the ratio of winning probabilities P_A/P_B of winning in a 2-player game with a ratio of odds for A and B in a single round of 2:1. To win the game it is necessary to win n rounds in a row.at n=9A370823