184900

Appears in sequences

• a(n) = 2nd elementary symmetric function of the first n+1 odd positive integers.at n=23A024196
• Squares of the form p1 - 1 where p1 is a lower twin prime.at n=16A145823
• Squares which are the sum of two or more consecutive squares.at n=18A151557
• Number of n X 3 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.at n=17A207118
• Perfect squares which can be written in all the four forms a^2+b^2, a^2+2*b^2, a^2+3*b^2 and a^2+7*b^2, with a > 0 and b > 0.at n=44A216682
• Squares whose sum of prime factors (with multiplicity) is also a perfect square.at n=25A392304