39253

Appears in sequences

• a(n) = a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1, a(2) = 2, and a(3) = 3.at n=35A050051
• Expansion of (1-x)^(-1)/(1-x-2*x^2+x^3).at n=17A077865
• Solutions y of the Mordell equation y^2 = x^3 - 3a^2 + 1 for a = 0,1,2, ... (solutions x are given by the sequence A000466).at n=17A173202
• Number of integer partitions of n with integer median of 0-appended first differences.at n=40A360688