# A176037 (b-file synthesized from sequence entry) 0 2 1 12 2 288 3 17280 4 2073600 5 435456000 6 146313216000 7 73741860864000 8 53094139822080000 9 52563198423859200000 10 69383421919494144000000 11 119061952013851951104000000 12 260031303198252661211136000000 13 709885457731229765106401280000000 14 2385215137976932010757508300800000000