# A122369 (b-file synthesized from sequence entry) 0 1 1 4 2 19 3 93 4 459 5 2273 6 11274 7 55964 8 277924 9 1380527 10 6858356 11 34074280 12 169297743 13 841173845 14 4179517118 15 20766807551 16 103184684826 17 512698227699 18 2547469553647 19 12657750705603 20 62893284231103 21 312501512711984 22 1552744642741738 23 7715214279423070