# A090158 (b-file synthesized from sequence entry) 0 1 1 0 2 -3 3 9 4 -15 5 15 6 -63 7 399 8 -255 9 -7425 10 -1023 11 355839 12 -4095 13 -22360065 14 -16383 15 1903790079 16 -65535 17 -209865211905 18 -262143 19 29088885637119 20 -1048575 21 -4951498051026945 22 -4194303 23 1015423886515240959 24 -16777215 25 -246921480190174429185