# A121626 (b-file synthesized from sequence entry) 0 1 1 1 2 -3 3 -26 4 161 5 2876 6 -27755 7 -740536 8 9722113 9 343603216 10 -5707904499 11 -250756091552 12 5039646554593 13 264489160965056 14 -6237995487261915 15 -380574552503498624 16 10303367499652761601 17 716309568462681538816 18 -21891769059478538933603