# A085023 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 13 4 97 5 981 6 12331 7 187153 8 3319233 9 67362697 10 1540796851 11 39256807701 12 1102344130273 13 33822265578973 14 1125785761963227 15 40407886961046361 16 1555858721974047361 17 63972335301256871313 18 2797676940942967706083