# A058521 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 2 5 3 6 4 7 7 8 11 9 20 10 36 11 67 12 121 13 215 14 377 15 657 16 1154 17 2045 18 3666 19 6628 20 12063 21 22079 22 40642 23 75264 24 140191 25 262457 26 493297 27 929703 28 1754941 29 3314509 30 6258052 31 11803995 32 22232306 33 41801393 34 78453563 35 146987053 36 274957984