# A014265 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 1 4 2 5 2 6 4 7 7 8 15 9 30 10 68 11 146 12 340 13 786 14 1878 15 4507 16 11045 17 27220 18 67956 19 170766 20 432818 21 1103539 22 2831814 23 7303966 24 18934866 25 49302321 26 128910528 27 338329555 28 891099316 29 2354613762 30 6240696052 31 16587146598 32 44203851675 33 118093003229