| A068628 |
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Sequence of nodes pertaining to A068627, which is defined as follows: a(0) = 0, a(n) = a(n-1) + n if n does not divide a(n-1). a(n) = a(n-1) - n if n divides a(n-1). a(n) = n if a(n-1) = 0 0,1,3,0,4,9,15,22,30,39,49,60,48,61,75,60,76,93,111,130,150,171,193,216,192,217,243,216,244,273,303,334,366,399,433,468,432,469,507,468,508,549,591,634,678,723,769,816,768,817,867,816,868,921, numbers occurring twice in the sequence like 60 etc. are called nodes. |
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+0
3
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