# A243022 (b-file synthesized from sequence entry) 0 -1 1 1 2 2 3 2 4 7 5 18 6 61 7 198 8 694 9 2446 10 8873 11 32556 12 121243 13 455986 14 1731459 15 6625258 16 25527571 17 98947914 18 385587017 19 1509702496 20 5936181673 21 23430706276 22 92805006308 23 368747893980 24 1469408091637 25 5870927247410