# A148641 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 6 4 22 5 64 6 227 7 753 8 2736 9 9928 10 37199 11 139507 12 533929 13 2061554 14 8066480 15 31752388 16 125891976 17 502487380 18 2019078792 19 8156824050 20 33106500545 21 134918511479 22 552142246160 23 2268298460019 24 9350458456464 25 38662710322643 26 160316815122417 27 666572529676688 28 2778626114316925