# A277493 (b-file synthesized from sequence entry) 0 1 1 2 2 10 3 66 4 504 5 4216 6 37548 7 350090 8 3380520 9 33558024 10 340670720 11 3522993656 12 37003723200 13 393856445664 14 4240313009272 15 46109094112170