# A012182 (b-file synthesized from sequence entry) 0 1 1 1 2 17 3 721 4 56545 5 7062241 6 1283497841 7 319471153457 8 104260273696961 9 43168502192389825 10 22100367268731836881 11 13703484478282258062481 12 10117607255517016666964897 13 8769262856125733251376413601