# A012928 (b-file synthesized from sequence entry) 0 1 1 0 2 -4 3 6 4 -19 5 20 6 26 7 -1218 8 13021 9 -123624 10 1277216 11 -12476530 12 142470545 13 -1576920228 14 20310039174 15 -259802497290 16 3783797829145 17 -55910099232336 18 917432601399236 19 -15504261990312618 20 284553809208217365