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Search: id:A131938
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| A131938 |
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a(1)=2; a(2)=5. a(n) = a(n-1) + (nth positive integer which does not occur in sequence A131937). |
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+0
2
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| 2, 5, 10, 16, 23, 32, 42, 53, 65, 78, 93, 109, 126, 144, 163, 183, 205, 228, 252, 277, 303, 330, 358, 388, 419, 451, 484, 518, 553, 589, 626, 665, 705, 746, 788, 831, 875, 920, 966, 1013, 1061, 1111, 1162, 1214, 1267, 1321, 1376, 1432, 1489, 1547
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OFFSET
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1,1
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EXAMPLE
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A131937: 1,4,8,14,21,29,...
Positive integers not in A131937: 2,3,5,6,7,9,10,11,...
So A131938(8) = A131938(7) + 11 = 53.
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CROSSREFS
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Cf. A131937.
Sequence in context: A002134 A062472 A086849 this_sequence A031871 A026056 A084587
Adjacent sequences: A131935 A131936 A131937 this_sequence A131939 A131940 A131941
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet (q1qq2qqq3qqqq(AT)yahoo.com), Jul 30 2007
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EXTENSIONS
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More terms from Farideh Firoozbakht (mymontain(AT)yahoo.com), Aug 07 2007
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