# A012154 (b-file synthesized from sequence entry) 0 1 1 -1 2 -11 3 -253 4 -9015 5 -362009 6 2294909 7 7143505067 8 2709263596817 9 958529947538255 10 359564035447469189 11 146418020203030157779 12 64393370639942123229401 13 29924760789755403918019639