# A067225 (b-file synthesized from sequence entry) 1 576 2 2025 3 11025 4 57600 5 202500 6 342225 7 950625 8 1102500 9 3515625 10 5760000 11 9272025 12 11390625 13 20250000 14 34222500 15 95062500 16 110250000 17 196700625 18 351562500 19 576000000 20 927202500 21 1139062500 22 2025000000 23 3422250000