# A068561 (b-file synthesized from sequence entry) 1 2 2 10 3 44 4 748 5 43010 6 294814 7 6349840 8 141329296 9 1074518324 10 74933514700 11 1768430946920 12 14084538964600 13 340000770605444 14 74512476573454612 15 609313847842042640 16 15044155456074175376 17 373539541721841740870