# A143170 (b-file synthesized from sequence entry) 0 1 1 45 2 1680 3 62790 4 2471175 5 104085135 6 4712781150 7 229345716600 8 11970744110325 9 668241679730625 10 39773331191493900 11 2516317288024790250 12 168723807382851595875 13 11956978164372003637875 14 893260022082269487896250 15 70178395183380972653665500