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A007902
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Number of pebbling configurations with n pebbles.
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1, 2, 4, 9, 20, 46, 105, 243, 561, 1301, 3014, 6995, 16227, 37668, 87426, 202961, 471150, 1093819, 2539348, 5895408, 13686805, 31775756, 73771474, 171270732, 397628399, 923150354, 2143222823, 4975795414
(list; graph; refs; listen; history; internal format)
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