# A144547 (b-file synthesized from sequence entry) 0 1 1 2880 2 758041804800 3 13319336815141167562752000 4 15354978274323252140217954794120612413440000 5 1160183823755957350394353874696058298158177597536388268425216000000 6 5744950321305805807513301436668994962443746225944514592041927656983526026246267317780480000000 7 1864342934383580231084517260259192252139946430124547822192277172067265954040486594733297802503864086641393952539593932800000000