65400

Appears in sequences

• a(n) = 2^n - n*(n+1)/2.at n=16A014833
• Expansion of x(1-3x+5x^2-2x^3)/((1-x)^3*(1-2x)).at n=15A130104
• The fourth row of the ED2 array A167560.at n=24A167561
• a(n) = smallest k such that prime(n) is the n-th largest divisor of k.at n=28A226326
• Sum of the even singletons in all partitions of n (n>=0). A singleton in a partition is a part that occurs exactly once.at n=32A276425
• Number of non-equivalent ways to place 2 non-attacking kings on an n X n board.at n=31A279111
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 305", based on the 5-celled von Neumann neighborhood.at n=15A287545
• a(n) = 2^(n + 3) - 10*n - 6.at n=12A308585