# A227458 (b-file synthesized from sequence entry) 1 1 2 2 3 12 4 124 5 1800 6 33654 7 769664 8 20811960 9 649520640 10 22977857130 11 908626363392 12 39716055829044 13 1901448823572480 14 98954978833285470 15 5562010902732226560 16 335794917699707735664 17 21671616664285622599680 18 1488915133606275294428370 19 108495148653912606138040320