# A058821 (b-file synthesized from sequence entry) 0 1 1 6 2 21 3 146 4 981 5 6222 6 38921 7 239946 8 1469826 9 8957976 10 54420339 11 329815506 12 1995387801 13 12056025246 14 72766743801 15 438839319470 16 2644790643216 17 15930973595046 18 95917737415956 19 577288174746786 20 3473350521083199 21 20892333943230346 22 125638899138654861