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A123641
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Triangular array related to sequence A123640 with row sum A001045.
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4
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1, 0, 1, 1, 0, 2, 0, 1, 0, 4, 1, 0, 2, 0, 8, 0, 1, 0, 4, 0, 16, 1, 0, 2, 0, 8, 0, 32, 0, 1, 0, 4, 0, 16, 0, 64, 1, 0, 2, 0, 8, 0, 32, 0, 128, 0, 1, 0, 4, 0, 16, 0, 64, 0, 256, 1, 0, 2, 0, 8, 0, 32, 0, 128, 0, 512, 0, 1, 0, 4, 0, 16, 0, 64, 0, 256, 0, 1024, 1
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,6
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LINKS
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EXAMPLE
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1
0 1
1 0 1 1
0 1 0 0 1 1 1 1
suppressing multiple zeros and counting contiguous ones yields
1
0 1
1 0 2
0 1 0 4
1 0 2 0 8
0 1 0 4 0 16
...
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PROG
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(PARI) a001045(n)=(2^n-(-1)^n)/3;
lista(nn) = {last = v[2]; nb = 1; s = 0; j = 1; for (i=3, nn, if ((v[i] == last) && (s+v[i] < a001045(j)), nb++; s += v[i]; , if (last, w = nb, w = 0); print1(w, ", "); nb = 1; last = v[i]; if (s + v[i] >= a001045(j), s = 0; j++; , s += v[i]; ); ); ); } \\ Michel Marcus, Feb 09 2014
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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