# A153575 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 64 4 1024 5 32752 6 2094318 7 267741217 8 68431511177 9 34967557296519 10 35722557457038015 11 72960515669384007174 12 297921161289491832202122 13 2432108336354772545286908394 14 39694705789611428794588557667852