# A131951 (b-file synthesized from sequence entry) 0 1 1 6 2 14 3 26 4 44 5 72 6 118 7 198 8 344 9 620 10 1154 11 2202 12 4276 13 8400 14 16622 15 33038 16 65840 17 131412 18 262522 19 524706 20 1049036 21 2097656 22 4194854 23 8389206 24 16777864 25 33555132 26 67109618