# A217858 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 3 5 15 6 15 7 105 8 105 9 315 10 315 11 3465 12 3465 13 45045 14 45045 15 45045 16 45045 17 765765 18 765765 19 14549535 20 14549535 21 14549535 22 14549535 23 334639305 24 334639305 25 1673196525 26 1673196525 27 5019589575 28 5019589575 29 145568097675 30 145568097675 31 4512611027925 32 4512611027925 33 4512611027925