# A297667 (b-file synthesized from sequence entry) 1 1 2 6 3 9 4 12 5 15 6 22 7 35 8 56 9 87 10 134 11 209 12 332 13 533 14 858 15 1381 16 2224 17 3587 18 5794 19 9367 20 15148 21 24499 22 39626 23 64101 24 103704 25 167785 26 271470 27 439233 28 710676 29 1149879 30 1860526 31 3010379 32 4870880 33 7881231 34 12752078 35 20633273 36 33385316 37 54018557 38 87403842 39 141422365 40 228826168