# A126493 (b-file synthesized from sequence entry) 0 1 1 25 2 163 3 1085 4 7275 5 48993 6 330875 7 2239053 8 15174303 9 102954301 10 699137069 11 4750953363 12 32302586991 13 219726864037 14 1495133067339 15 10176462578315 16 69280311235399 17 471736449047969 18 3212552110817705 19 21880121177493973