3240000

Appears in sequences

• Squares of even pentagonal pyramidal numbers.at n=11A014800
• Denominators of poly-Bernoulli numbers B_n^(k) with k=4.at n=4A027648
• Numbers k with the property that k is a substring of its base-6 representation.at n=24A038106
• Numbers n such that n and its 10's complement are both squares, i.e., n and 10^k - n (where k is the number of digits in n) are squares.at n=22A068810
• (n!*(3*n))^2.at n=5A069134
• a(1)=0, a(2)=9; then distinct squares such that the sum of three successive terms is a square.at n=18A075373
• Least number k which can be written as k^2 * j, 0 < j <= k in n ways.at n=10A104024
• a(n) = 4*n^4.at n=30A141046
• a(n) = ((4+sqrt(5))*(5+sqrt(5))^n + (4-sqrt(5))*(5-sqrt(5))^n)/2.at n=7A163072
• Squares for which no smaller square has the same number of divisors.at n=37A166721
• Number of (n+2) X 3 binary arrays avoiding patterns 001 and 011 in rows and columns.at n=25A202093
• Number of (n+1)X5 0..7 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=0A203731
• T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=6A203732
• T(n,k)=Number of (n+1)X(k+1) 0..7 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements.at n=9A203732
• Number of (n+1)X(2+1) 0..1 arrays with nondecreasing sum of every two consecutive values in every row and column.at n=26A250426
• Numbers m such that the largest digit of m^3 is 4.at n=30A294664
• Numbers with a record number of divisors that are perfect powers (A091050).at n=30A330873
• Powerful superabundant numbers: numbers m such that psigma(m)/m > psigma(k)/k for all k < m, where psigma(k) is the sum of powerful divisors of k (A183097).at n=26A349111
• Perfect powers of Achilles numbers.at n=21A383394
• Powers k^m, m > 1, where k is an Achilles number whose squarefree kernel is a primorial.at n=10A389226