# A149302 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 11 4 46 5 172 6 750 7 3120 8 14087 9 61571 10 284436 11 1281379 12 6008651 13 27633271 14 130944600 15 611154458 16 2918673524 17 13771848825 18 66164267793 19 314806106581 20 1519581215764 21 7277197766203 22 35261251918970 23 169741515939425 24 825046304792297 25 3988381669094450 26 19436472354360319 27 94285252643418217