4008004
domain: N
Appears in sequences
- Palindromic squares.at n=17A002779
- Number of walks on square lattice. Column y=3 of A052174.at n=11A005561
- Number of walks on square lattice.at n=6A005569
- Squares of elements to right of central element in Pascal triangle (by row) that are not 1.at n=37A014720
- Squares of numbers in array formed from even elements to the right of middle of rows of Pascal triangle.at n=21A014762
- Palindromic squares with an odd number of digits.at n=15A028817
- Palindromes whose sum of divisors is odd.at n=23A028984
- Squares whose digits are all even.at n=34A030098
- Palindromes whose square root is a palindrome.at n=13A057136
- Squares composed of digits {0,4,8}, not ending with zero.at n=4A058442
- Palindromic perfect powers.at n=21A075786
- Palindromes in A085932.at n=18A085933
- a(n) = maximal value of C(i, j) * C(n-j, n-i) for 0 <= j <= i <= n.at n=18A094291
- Maximal number of longest common subsequences between any two binary strings of length n (Version 1).at n=18A094837
- Numbers n such that n multiplied by its reverse yields a fourth power.at n=22A131760
- Palindromic numbers which are the product of a number k and its reversal (k written backwards).at n=26A158642
- Binomial(n-k,k)^2 where k = ceiling(n/4).at n=19A171001
- A lower bound for A094837.at n=18A171003
- Squares containing only the digits 0, 4 or 8.at n=9A202172
- Let x(1)x(2)... x(q) denote the decimal expansion of a number n with q odd. The sequence lists the squares n such that the central digit equals the sum of the other digits.at n=9A236181