# A148330 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 14 5 42 6 134 7 450 8 1561 9 5584 10 20384 11 76110 12 288678 13 1111867 14 4332969 15 17081566 16 68003151 17 273141366 18 1105621792 19 4507122693 20 18493763341 21 76333387299 22 316764690900 23 1320956750386 24 5533915084459 25 23281928699430 26 98335287674627 27 416846016334321 28 1773046351548880 29 7565766894106024