# A009698 (b-file synthesized from sequence entry) 0 0 1 2 2 12 3 358 4 19352 5 1709194 6 222722596 7 40122780142 8 9543330683696 9 2895895566420498 10 1091590070839432764 11 500335689476146083190 12 274027979513688992336584 13 176734166480671985581245594