# A144906 (b-file synthesized from sequence entry) 0 1 1 3 2 31 3 1684 4 271776 5 97484904 6 65617109160 7 74248657560720 8 130752443907524880 9 338450307621257099520 10 1232284889962378714855680 11 6094200542431309662145478400 12 39788645361978802435089535468800 13 334957784448996146804912925763507200