504504

Appears in sequences

• a(n) = 126*(n+1)*binomial(n+5,9)/5.at n=5A027814
• a(n) = binomial(n+5,n)*binomial(n+9,n).at n=5A105252
• Numbers whose square is the product of a number and its reverse.at n=35A207373
• Triangle read by rows: T(n,m) is the number of inequivalent n X m matrices under action of the Klein group, with one-third each of 1s, 2s and 3s (ordered occurrences rounded up/down if m*n != 0 mod 3).at n=14A286892
• Non-palindromes numbers not ending in 0 whose square is the product of a number and its reverse in only one way.at n=22A325151
• Terms of A338039 that are repeated concatenations of smaller integers.at n=6A338166
• a(n) is the smallest number that has exactly n divisors that are cyclops numbers (A134808).at n=15A357033