# A273335 (b-file synthesized from sequence entry) 0 1 1 4 2 48 3 224 4 960 5 3968 6 16128 7 65024 8 261120 9 1046528 10 4190208 11 16769024 12 67092480 13 268402688 14 1073676288 15 4294836224