# A308381 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 16 5 56 6 256 7 1072 8 11264 9 119296 10 1075456 11 9088256 12 85292032 13 894690304 14 8968964096 15 90882789376 16 2409397682176 17 40515889528832 18 1051789297844224 19 16251803853193216 20 302342408330018816 21 4444559976664662016 22 84010278329827459072 23 1289319649553742823424