(Translated by https://www.hiragana.jp/)
# A213507 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 17 4 149 5 1809 6 28399 7 550297 8 12732873 9 343231361 10 10576764251 11 367054970721 12 14173669352413 13 602974492511377 14 28027436035348359 15 1413479599558432169 16 76879014760731439889 17 4486205132570631391617 18 279595430611791210216883 19 18536284947404377562405041