250994068domain: NAppears in sequencesSquare of determinant of character table of the dihedral group with 2n elements.at n=12A063073Number of nX2 0..4 arrays with no entry increasing mod 5 by 4 rightwards or downwards, starting with upper left zero.at n=7A222138Numbers k such that k^4 is sum of two positive 7th powers.at n=17A291830