# A213537 (b-file synthesized from sequence entry) 1 7 2 13 3 37 4 79 5 163 6 499 7 1279 8 2683 9 5503 10 11443 11 23977 12 48193 13 96457 14 194809 15 390739 16 781969 17 1563967 18 3128887