308025

Appears in sequences

• a(n) = (F(n+1) + L(n))^2 where F(n) are the Fibonacci numbers (A000045) and L(n) are the Lucas numbers (A000032).at n=12A014717
• Squares of A002279: a(n) = (5*(10^n - 1)/9)^2.at n=3A075414
• a(1) = 1; a(n+1) is the smallest square greater than n*a(n).at n=8A077211
• Odd squares not in A113659.at n=25A103962
• Numbers which can be expressed as the product of numbers made of only fives.at n=30A161143
• Odd half-Zumkeller numbers.at n=32A246199
• Squares whose arithmetic mean of digits is 3 (i.e., the sum of digits is 3 times the number of digits).at n=31A316483
• Numbers k such that (65*k)^2 can be represented in exactly 4 ways as the sum of a positive square and a positive fourth power.at n=9A346594
• Expansion of (1/x) * Series_Reversion( x * (1-x)^3 * (1-x^3)^3 ).at n=7A369301