851929

Appears in sequences

• Smallest square with Hamming weight n (i.e., with exactly n 1's when written in binary).at n=15A089998
• Squares not divisible by 10 with digits d_1, d_2, ... d_k such that d_1^2 + ... + d_k^2 is a square.at n=32A254959
• Squares m = k^2 with the property that nextprime(k) is a substring of m.at n=6A274932
• Numbers k such that concat(k, d(k)) and concat(d(k), k) are both prime, where d(k) is the number of divisors of k.at n=19A284643
• a(n) is the least perfect power A001597 with binary weight n.at n=14A386242