# A089272 (b-file synthesized from sequence entry) 0 1 1 48 2 1412 3 34400 4 766416 5 16296448 6 337709632 7 6896540160 8 139644851456 9 2813500878848 10 56517475402752 11 1133320271749120 12 22702062218039296 13 454469171469877248 14 9094518828981174272 15 181952003020274401280