# A023485 (b-file synthesized from sequence entry) 1 7 2 10 3 14 4 20 5 28 6 40 7 59 8 90 9 138 10 215 11 339 12 539 13 862 14 1384 15 2229 16 3594 17 5802 18 9374 19 15153 20 24503 21 39631 22 64108 23 103712 24 167792 25 271475 26 439237 27 710682 28 1149887 29 1860535 30 3010387 31 4870886 32 7881236 33 12752084 34 20633281 35 33385325 36 54018565 37 87403848 38 141422370