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Search: id:A008863
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| 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2047, 4083, 8100, 15914, 30827, 58651, 109294, 199140, 354522, 616666, 1048576, 1744436, 2842226, 4540386, 7119516, 10970272, 16628809, 24821333, 36519556, 53009102, 75973189, 107594213
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OFFSET
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0,2
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REFERENCES
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L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 72, Problem 2.
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FORMULA
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a(n)=sum(binomial(n+1, 2k), k=0..5), compare A008859.
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CROSSREFS
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Cf. A008859, A008860, A008861, A008862, A006261, A000127.
Sequence in context: A122265 A113010 A056767 this_sequence A145117 A133025 A118655
Adjacent sequences: A008860 A008861 A008862 this_sequence A008864 A008865 A008866
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KEYWORD
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nonn
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AUTHOR
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njas, R. K. Guy
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