# A146049 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 3 5 13 6 35 7 181 8 1303 9 13131 10 161693 11 2592581 12 57377381 13 1720164275 14 69927099465 15 3715147371129 16 261988046119405 17 24980387570081613 18 3210146525819915095 19 550205755804555982181 20 125514016677735094761717