# A245470 (b-file synthesized from sequence entry) 1 1 2 6 3 15 4 36 5 85 6 150 7 287 8 1032 9 2169 10 4170 11 8283 12 16428 13 32877 14 65646 15 131295 16 524304 17 1048849 18 2097234 19 4194611 20 8388660 21 16777845 22 33554774 23 67109239 24 134217816 25 268436025 26 536871322 27 1073742075 28 2147483772 29 4294967773 30 8589935070 31 17179869695 32 68719476768 33 137438955489 34 274877908002 35 549755814755 36 1099511627940