1056832

Appears in sequences

• Consider the geometric progression 1,1/2,1/4,1/8,1/16,1/32,1/64,... Group the terms such that the n-th group contains n terms like this (1/1),(1/2,1/4),(1/8,1/16,1,32),(1/64,1/128,1/256,1/512),... a(n) = floor(1/s(n)) where s(n) is the sum of the members of the n-th group.at n=6A081972
• Number of cases in which the first player gets killed in a Russian roulette game when 7 players use a gun with n chambers and the number of the bullets can be from 1 to n. In the game they do not rotate the cylinder after the game starts.at n=20A117302
• a(n) = n^3*sigma_7(n).at n=4A386781