# A148827 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 27 5 85 6 309 7 1081 8 4049 9 14846 10 57700 11 220417 12 868886 13 3391316 14 13641655 15 54422537 16 221000582 17 892890628 18 3671515220 19 15034249963 20 62252763685 21 257099572289 22 1073686090460 23 4474451273263 24 18786656060621 25 78779380559729 26 332824779239776 27 1404731718280666 28 5960097991188767