# A203586 (b-file synthesized from sequence entry) 1 13 2 500 3 40426 4 5709600 5 1256804900 6 399383584000 7 173474742285000 8 98872482630272000 9 71645799536067250000 10 64368175738481971200000 11 70249051303937073666500000 12 91567621291850074309120000000