# A271823 (b-file synthesized from sequence entry) 1 4 2 0 3 2 4 7 5 24 6 84 7 300 8 1089 9 4004 10 14872 11 55692 12 209950 13 795872 14 3031032 15 11589240 16 44462565 17 171085500 18 660009840 19 2551955340 20 9887121090 21 38374857840 22 149184555000 23 580807904040 24 2264193450090 25 8837215647624 26 34529741789904 27 135054066707000