# A053361 (b-file synthesized from sequence entry) 1 10 2 22 3 34 4 42 5 150 6 1758 7 6706 8 11634 9 18502 10 52614 11 102150 12 194830 13 207546 14 252858 15 333406 16 638902 17 989182 18 1117182 19 1317378 20 1522650 21 4911870