27258841

Appears in sequences

• Squares of odd heptagonal numbers.at n=23A014773
• Squares which are palindromes in base 4.at n=20A029987
• Smallest square with Hamming weight n (i.e., with exactly n 1's when written in binary).at n=19A089998
• a(n) is the least perfect power A001597 with binary weight n.at n=18A386242