# A079750 (b-file synthesized from sequence entry) 3 0 4 4 5 25 6 156 7 1099 8 8800 9 79209 10 792100 11 8713111 12 104557344 13 1359245485 14 19029436804 15 285441552075 16 4567064833216 17 77640102164689 18 1397521838964420 19 26552914940323999 20 531058298806480000 21 11152224274936080021