# A024303 (b-file synthesized from sequence entry) 0 0 1 1 2 0 3 -24 4 448 5 -640 6 -658944 7 56992768 8 -2831024128 9 -86998155264 10 51519425740800 11 -9075812362878976 12 917148920337924096 13 26667007293767286784 14 -33058738844745936666624 15 2573727989288825813729280 16 4259701574179331481681264640