314721

Appears in sequences

• Sum of first n cubes; or n-th triangular number squared.at n=33A000537
• Squares of odd triangular numbers.at n=16A014736
• Squares of odd hexagonal numbers.at n=8A014771
• Smallest square divisible by the n-th triangular number (n(n+1)/2).at n=32A085037
• Odd squares not in A113659.at n=28A103962
• Permutational numbers A134640 which are squares.at n=7A134741
• Squares k such that k - 2 and k + 2 are prime.at n=15A144938
• Squares that become a prime number when prefixed with a 2.at n=26A167717
• The numbers n^2 as n runs through the numbers which are palindromes in base 2.at n=48A192775
• Smallest number expressible in the form a^2 + 2b^2, with positive integers a and b, in exactly n ways.at n=12A200977
• 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=19A207118
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.at n=31A207363
• Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.at n=5A207902
• Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.at n=5A207906
• Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 0 1 1 vertically.at n=5A207911
• Odd half-Zumkeller numbers.at n=33A246199
• Number of (1+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=30A250813
• Smallest square that is pandigital in base n.at n=5A260182
• Squares whose arithmetic mean of digits is 3 (i.e., the sum of digits is 3 times the number of digits).at n=33A316483
• a(n) = A084605(n)^2, the square of the central coefficient in (1 + x + 4*x^2)^n.at n=5A322240