# A039687 (b-file synthesized from sequence entry) 1 7 2 13 3 97 4 193 5 769 6 12289 7 786433 8 3221225473 9 206158430209 10 6597069766657 11 221360928884514619393 12 2353913150770005286438421033702874906038383291674012942337