# A030974 (b-file synthesized from sequence entry) 1 2 2 4 3 12 4 50 5 254 6 1524 7 10669 8 85357 9 768216 10 7682169 11 84503866 12 1014046395 13 13182603137 14 184556443918 15 2768346658779 16 44293546540479 17 752990291188151 18 13553825241386727 19 257522679586347822 20 5150453591726956442