# A012193 (b-file synthesized from sequence entry) 0 1 1 -1 2 17 3 -721 4 58337 5 -7657441 6 1482169457 7 -396854618161 8 140415423261377 9 -63432792091634881 10 35619694647751942097 11 -24334169873267896659601 12 19872330538404158435859617