484500domain: NAppears in sequencesCoefficient of x^7 in expansion of (1+x+x^2)^n.at n=16A005715Numbers k such that 193*2^k+1 is prime.at n=37A032473Numbers x such that sigma(x) = sigma(y), with x<>y, where y is the 10's complement mod 10 of the digits of x.at n=34A300447