# A121568 (b-file synthesized from sequence entry) 2 1 3 1 4 2 5 5 6 8 7 21 8 34 9 89 10 377 11 610 12 2584 13 6765 14 10946 15 28657 16 121393 17 514229 18 832040 19 3524578 20 9227465 21 14930352 22 63245986 23 165580141 24 701408733 25 4807526976 26 12586269025 27 20365011074 28 53316291173 29 86267571272 30 225851433717