# A104088 (b-file synthesized from sequence entry) 1 3 2 7 3 23 4 79 5 241 6 727 7 2179 8 6553 9 19681 10 59029 11 177131 12 531383 13 1594301 14 4782961 15 14348891 16 43046623 17 129140153 18 387420479 19 1162261453 20 3486784393 21 10460353199 22 31381059607 23 94143178807 24 282429536453 25 847288609423