242204

Appears in sequences

• Number of ways of pairing the squares of the numbers 1 to n with the squares of the numbers n+1 to 2n such that each pair sums to a prime. Because an odd square must always be added to an even square to obtain a prime, this sequence is the product of A077763 and A077764.at n=22A077762
• Base 5 numbers whose square is a palindrome in base 5.at n=16A263611