# A012639 (b-file synthesized from sequence entry) 0 1 1 -1 2 17 3 -385 4 15073 5 -1010945 6 101590513 7 -14396384769 8 2765830859457 9 -694784293696513 10 221386930443511505 11 -87298037019243856513 12 41742102489497599699873 13 -23796035609379191857799425