# A322939 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 9 4 25 5 81 6 273 7 889 8 2921 9 9601 10 31521 11 103529 12 340025 13 1116721 14 3667633 15 12045529 16 39560841 17 129928801 18 426722241 19 1401474249 20 4602830425 21 15116972561 22 49648333393 23 163058906169 24 535530702761 25 1758831457601 26 5776490648161 27 18971598480169 28 62307994735225