# A011641 (b-file synthesized from sequence entry) 0 1 1 1 2 0 3 0 4 0 5 -1 6 -1 7 -1 8 -1 9 0 10 1 11 1 12 1 13 1 14 1 15 0 16 -1 17 -1 18 -1 19 -1 20 0 21 0 22 0 23 1 24 1