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A079246
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"Memory" of 2^n: the number of (previous) powers of 2 contained as substrings in 2^n.
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0
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0, 0, 0, 0, 1, 1, 2, 1, 1, 2, 3, 1, 2, 3, 3, 0, 1, 2, 3, 2, 1, 1, 1, 2, 3, 3, 3, 3, 2, 3, 4, 2, 3, 2, 2, 2, 3, 3, 2, 2, 2, 2, 2, 4, 4, 3, 4, 3, 2, 3, 3, 2, 2, 2, 2, 2, 3, 3, 4, 3, 3, 4, 3, 3, 4, 4, 4, 3, 2, 4, 4, 4, 3, 2, 3, 4, 4, 2, 3, 3, 4, 5, 3, 4, 3, 4, 3, 3, 4, 3, 3, 4, 3, 3, 5, 5, 4, 4, 4, 4
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,7
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MATHEMATICA
| lb = 1; ub = 100; tt = Table[ToString[2^i], {i, 1, ub}]; a = {}; For[i = lb, i <= ub, i++, m = 0; For[j = 1, j < i, j++, If[Length[StringPosition[tt[[i]], tt[[j]]]] > 0, m = m + 1]]; a = Append[a, m]]; a
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CROSSREFS
| Sequence in context: A179009 A112757 A118492 * A070990 A097868 A025830
Adjacent sequences: A079243 A079244 A079245 * A079247 A079248 A079249
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KEYWORD
| base,easy,nonn
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AUTHOR
| Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Feb 03 2003
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