# A136331 (b-file synthesized from sequence entry) 0 0 1 3 2 6 3 21 4 48 5 195 6 462 7 1917 8 4560 9 18963 10 45126 11 187701 12 446688 13 1858035 14 4421742 15 18392637 16 43770720 17 182068323 18 433285446 19 1802290581 20 4289083728 21 17840837475 22 42457551822 23 176606084157 24 420286434480 25 1748220004083