# A148290 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 34 6 102 7 304 8 925 9 2930 10 9356 11 30311 12 99822 13 331596 14 1112254 15 3760716 16 12814621 17 43943067 18 151483760 19 525294768 20 1829733893 21 6399076740 22 22474998817 23 79217132995 24 280099122391 25 993531937083 26 3534287684677 27 12604497105919 28 45063361029910 29 161487916713614 30 579923511283958 31 2086743518925658