# A076995 (b-file synthesized from sequence entry) 1 4 2 6 3 10 4 18 5 35 6 69 7 136 8 270 9 539 10 1077 11 2152 12 4303 13 8605 14 17208 15 34415 16 68829 17 137657 18 275313 19 550625 20 1101249 21 2202497 22 4404993 23 8809985 24 17619969 25 35239936 26 70479871 27 140959741 28 281919481 29 563838961 30 1127677921 31 2255355841