# A003196 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 0 5 0 6 -2 7 0 8 0 9 0 10 0 11 -24 12 26 13 0 14 0 15 -48 16 -252 17 720 18 -438 19 -192 20 -984 21 -1008 22 12924 23 -19536 24 3062 25 -8280 26 26694 27 153536 28 -507948 29 406056 30 -79532 31 729912 32 631608 33 -9279376 34 15771600 35 -7467336 36 10935114 37 -21835524 38 -112752684 39 400576168 40 -410287368