# A292448 (b-file synthesized from sequence entry) 1 3 2 7 3 13 4 31 5 127 6 307 7 1723 8 2801 9 3541 10 8191 11 19531 12 86143 13 131071 14 492103 15 524287 16 552793 17 684757 18 704761 19 735307 20 797161 21 1353733 22 1886503 23 3413257 24 3894703 25 5473261 26 7094233 27 7781311 28 9250723 29 10378063 30 12655807 31 18143341 32 19443691 33 22292563 34 23907211