# A177203 (b-file synthesized from sequence entry) 0 1 1 10 2 19 3 136 4 649 5 4375 6 26893 7 184438 8 1249507 9 8820901 10 62634223 11 453382597 12 3309224059 13 24424411627 14 181601249779 15 1360466777260 16 10253089323433 17 77706202937131 18 591759519723973 19 4526303458541383 20 34756744887203401