# A376482 (b-file synthesized from sequence entry) 1 1 2 1 3 4 4 6 5 30 6 72 7 336 8 720 9 4864 10 9900 11 54498 12 139968 13 728208 14 1820448 15 11748240 16 23224320 17 142888536 18 424189440 19 2066689584 20 4704480000 21 34426570752 22 75016279008 23 437072997306 24 1171108896768 25 6391042560000 26 16287748233120 27 111155542830144 28 225354102607872 29 1419514150386528 30 3983428743840000 31 21252009311404938 32 49614674429214720