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1, 2, 3, 4, 6, 7, 8, 11, 14, 15, 16, 20, 26, 30, 31, 32, 37, 47, 57, 62, 63, 64, 70, 85, 105, 120, 126, 127, 128, 135, 156, 191, 226, 247, 254, 255, 256, 264, 292, 348, 418, 474, 502, 510, 511, 512, 521, 557, 641, 767, 893, 977, 1013, 1022, 1023, 1024, 1034, 1079, 1199
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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FORMULA
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EXAMPLE
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a(1)=0!/(0!(0-0)!)=1.
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MATHEMATICA
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Flatten[Table[2^a-1+Sum[Binomial[a, p], {p, 0, b}], {a, 0, 10}, {b, 0, a}]] (* Frank M Jackson, Apr 25 2011 *)
Accumulate[Flatten[Table[Binomial[n, k], {n, 0, 11}, {k, 0, n}]]] (* Harvey P. Dale, Dec 04 2012 *)
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PROG
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(Haskell)
a163866 n = a163866_list !! (n-1)
a163866_list = scanl1 (+) $ concat a007318_tabl
(PARI) lista(nn) = {my(i=0, j=0, p=0); for (n=1, nn, p += binomial(i, j); print1(p, ", "); j++; if (j > i, j = 0; i++); ); } \\ Michel Marcus, Jan 25 2019
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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