2097223domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 2^x+x*y+2^y, with x and y integers of any sign.at n=23A162573List of free 5-dimensional polyominoes in binary code (see A365139), ordered first by the number of cells, then by the value of the binary code.at n=25A365141Prime numbersat n=155614