# A139590 (b-file synthesized from sequence entry) 1 8 2 21 3 34 4 55 5 144 6 377 7 2584 8 4181 9 6765 10 17711 11 46368 12 75025 13 121393 14 196418 15 317811 16 832040 17 1346269 18 2178309 19 5702887 20 14930352 21 102334155 22 165580141 23 267914296 24 701408733 25 1134903170 26 4807526976 27 12586269025 28 32951280099