# A274526 (b-file synthesized from sequence entry) 0 0 1 2 2 4 3 28 4 96 5 472 6 1904 7 8528 8 36096 9 157472 10 675904 11 2926528 12 12612096 13 54489472 14 235099904 15 1015094528 16 4381188096 17 18913321472 18 81638523904 19 352410262528 20 1521205764096 21 6566514153472 22 28345085947904 23 122355313430528 24 528161486340096