# A199883 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 4 5 9 6 20 7 48 8 113 9 262 10 591 11 1263 12 2505 13 4764 14 8479 15 14285 16 22871 17 35316 18 52755 19 76517 20 107826 21 148914 22 202715 23 270622