81796

Appears in sequences

• Squares of tetrahedral numbers: a(n) = binomial(n+3,n)^2.at n=10A001249
• Squares of numbers of rooted trees.at n=8A001257
• Number of 3-tuples (p_1, p_2, p_3) of Dyck paths of semilength n, such that each p_i is never below p_{i-1}.at n=6A006149
• Squares of elements to right of central element in Pascal triangle (by row) that are not 1.at n=33A014720
• Squares of elements to left of the central element in Pascal triangle (by row).at n=45A014721
• Squares of numbers in array formed from even elements to the right of middle of rows of Pascal triangle.at n=19A014762
• Squares of distinct elements in Pascal triangle.at n=37A014764
• Squares of even heptagonal numbers.at n=5A014792
• Squares of even tetrahedral numbers (A015220).at n=8A014796
• a(n) = (8*n+6)^2.at n=35A017138
• a(n) = (10*n + 6)^2.at n=28A017342
• a(n) = (11*n)^2.at n=26A017390
• a(n) = (12*n+10)^2.at n=23A017642
• Squares with initial digit '8'.at n=10A045792
• Sigma(n) / d(n) is a perfect square associated with A049226.at n=22A049227
• a(1) = 1; a(n) is the smallest square > a(n-1) which differs from it at every digit.at n=34A068854
• Upper triangle of Catalan Number Wall.at n=39A078920
• A094559/4.at n=10A094578
• Triangle read by rows, giving Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).at n=41A123352
• Numbers that are the squares of the product of three distinct primes.at n=30A162143