91205

Appears in sequences

• Numbers that are the sum of 2 nonzero squares in exactly 8 ways.at n=20A025291
• Numbers that are the sum of 2 nonzero squares in 7 or more ways.at n=21A025298
• Numbers that are the sum of 2 nonzero squares in 8 or more ways.at n=21A025299
• Numbers that are the sum of 2 distinct nonzero squares in exactly 8 ways.at n=20A025309
• Numbers that are the sum of 2 distinct nonzero squares in 7 or more ways.at n=21A025317
• Numbers that are the sum of 2 distinct nonzero squares in 8 or more ways.at n=21A025318
• Numbers k that are the hypotenuse of exactly 40 distinct integer-sided right triangles, i.e., k^2 can be written as a sum of two squares in 40 ways.at n=11A097282
• a(n) = 81*n^2 - 72*n + 17.at n=34A154277
• a(n) = 6561*n^2 - 3564*n + 485.at n=4A156774
• Numbers n that are the product of four distinct odd primes and x^2 + y^2 = n has integer solutions.at n=8A264499
• Numbers k such that 97*10^k - 3 is prime.at n=27A281111
• Numbers having in binary representation more zeros than their squares.at n=15A293655