234955

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 69 ones.at n=25A031837
• Pyramidal centered square numbers.at n=18A237516
• Number of nonequivalent (mod D_8) ways to place 3 points on an n X n point grid so that no point is equally distant from two other points on the same row or the same column.at n=14A296996
• Triangular numbers whose sum of divisors is an oblong number.at n=16A317478
• a(n) is the largest term encountered on the path to 0 when iterating the map x -> x', and starting from x = A351255(n). Here x' means the arithmetic derivative of x, A003415.at n=51A351261