# A169948 (b-file synthesized from sequence entry) 2 1 3 2 4 6 5 14 6 29 7 52 8 96 9 160 10 277 11 450 12 712 13 1086 14 1657 15 2448 16 3636 17 5280 18 7635 19 10840 20 15392 21 21372 22 29655 23 40580 24 55282 25 74620 26 100651 27 134232 28 178922 29 236488 30 312019 31 408550 32 534288 33 692978 34 897931 35 1156256 36 1485650 37 1897704 38 2421635 39 3071608 40 3894042