50501

Appears in sequences

• Carryless squares of carryless primes (cf. A169887).at n=24A169904
• Semiprimes formed by concatenating n, n, and 1 for n = 1, 2, 3,....at n=21A210711
• Numbers k such that there are exactly five biquadratefree powerful numbers (A338325) between k^2 and (k+1)^2.at n=6A338392
• Nonnegative numbers k not ending in 0 such that, in decimal representation, the subsequence of digits of k^2 occupying an odd position is equal to the digits of k.at n=22A362020