329476

Appears in sequences

• Even squares in which parity of digits alternates.at n=16A030158
• Start with a square; at each stage add a square at each expandable vertex so that the ratio of the side of the squares at stage n+1 and at stage n is the golden ratio phi=0.618...; a(n) is the number of squares in a portion of the n-th stage (see below).at n=15A269963
• Powerful numbers (A001694) whose sum of powerful divisors (including 1) is also powerful.at n=14A349109
• Squares whose sum of prime factors (with multiplicity) is also a perfect square.at n=35A392304