# A246813 (b-file synthesized from sequence entry) 0 1 1 4 2 23 3 152 4 1085 5 8156 6 63579 7 509136 8 4161649 9 34566580 10 290798551 11 2471871784 12 21191824645 13 182984610220 14 1589620392835 15 13881368684128 16 121767703088377 17 1072382299895428 18 9477296423786207 19 84017470425706040 20 746903374745524629 21 6656552616997851036 22 59459592374756968323