189225

Appears in sequences

• Sum of first n cubes; or n-th triangular number squared.at n=29A000537
• Squares of odd triangular numbers.at n=14A014736
• Squares of odd hexagonal numbers.at n=7A014771
• a(n) = (12*n + 3)^2.at n=36A017558
• For the numbers k that can be expressed as k = w+x = y*z with w*x = (y+z)^2 where w, x, y, and z are all positive integers, this sequence gives the corresponding values of w*x.at n=16A057442
• Expansion of (1-x)/(1-x^2+2*x^3).at n=30A078028
• Smallest square divisible by the n-th triangular number (n(n+1)/2).at n=28A085037
• Expansion of g.f. x*(-1-x-3*x^2-x^3+2*x^5)/((2*x^3+x^2-1)*(x^4+1)).at n=30A107851
• Numbers n for which the absolute value of the abundance of both n and n^2 is a prime number.at n=28A125237
• a(n) = (29*n)^2.at n=15A133496
• a(n) = (14*n+1)^2.at n=31A134934
• Expansion of x*(1+x)/(1-x^2-2*x^3).at n=31A159284
• Perfect squares that are a product of two triangular numbers.at n=35A169835
• 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=27A207363
• Number of (n+5)X7 0..1 matrices with each 6X6 subblock idempotent.at n=20A224571
• Odd half-Zumkeller numbers.at n=25A246199
• 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=26A250813
• Number of (1+1)X(n+1) arrays of permutations of 0..n*2+1 with each element having index change +-(.,.) 0,0 0,2 or 1,2.at n=9A264132
• Squares that are the sum of the digits of the numbers from 0 to n, for some n.at n=41A271629
• The maximum number of coins that can be processed in n weighings where all coins are real except for one LHR-coin starting in the light state.at n=14A279673