# A080870 (b-file synthesized from sequence entry) 1 1 2 5 3 15 4 41 5 107 6 276 7 708 8 1811 9 4629 10 11827 11 30214 12 77182 13 197159 14 503632 15 1286495 16 3286264 17 8394533 18 21443246 19 54775263 20 139919550 21 357414628 22 912990471 23 2332169791 24 5957363305 25 15217664544 26 38872451165 27 99296935817