# A006983 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 1 22 8 23 12 24 26 25 160 26 441 27 1152 28 3001 29 7901 30 20566 31 54541 32 144161 33 378197 34 990981 35 2578081 36 6674067 37 17086918