# A091760 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 63 4 555 5 6303 6 87381 7 1434891 8 27272727 9 589486923 10 14288622513 11 384034370151 12 11338782475059 13 364911575317383 14 12716046006693165 15 477070508584969299 16 19174662804725408175 17 822058028667720327891