23409

Appears in sequences

• Sum of first n cubes; or n-th triangular number squared.at n=17A000537
• Duplicate of A006253.at n=8A003697
• Number of perfect matchings (or domino tilings) in C_4 X P_n.at n=8A006253
• Squares of odd triangular numbers.at n=8A014736
• Squares of numbers in array formed from odd elements to the right of middle of rows of Pascal triangle that are not 1.at n=26A014760
• Squares of numbers in array formed from odd elements to the right of middle of rows of Pascal triangle.at n=43A014761
• Squares of odd hexagonal numbers.at n=4A014771
• a(n) = (4*n + 1)^2.at n=38A016814
• a(n) = (5*n + 3)^2.at n=30A016886
• a(n) = (6*n+3)^2.at n=25A016946
• a(n) = (7*n + 6)^2.at n=21A017054
• a(n) = (8*n + 1)^2.at n=19A017078
• a(n) = (9*n)^2.at n=17A017162
• a(n) = (10*n + 3)^2.at n=15A017306
• a(n) = (11*n + 10)^2.at n=13A017510
• a(n) = (12*n + 9)^2.at n=12A017630
• Molien series for complete weight enumerator of self-dual code over GF(5) containing all-1's vector.at n=20A028345
• a(n) = (1/4)*floor(n/2)*floor((n-1)/2)*floor((n-2)/2)*floor((n-3)/2).at n=37A028723
• Numbers with 15 divisors.at n=21A030633
• Square numbers that are concatenations of two or more prime numbers.at n=21A038692