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Search: id:A070232
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| A070232 |
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a(1) = 4; a(n) = smallest composite number greater than the sum of all previous terms. |
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+0
1
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| 4, 6, 12, 24, 48, 95, 190, 380, 760, 1520, 3040, 6080, 12160, 24320, 48640, 97280, 194560, 389120, 778240, 1556480, 3112960, 6225920, 12451840, 24903680, 49807360, 99614720, 199229440, 398458880, 796917760, 1593835520, 3187671040
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OFFSET
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1,1
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COMMENT
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a(n) = 95*2^(n-6) for n > 5.
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MATHEMATICA
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a = {4}; Do[b = 1 + Plus @@ a; While[ PrimeQ[b], b++ ]; a = Append[a, b], {n, 2, 30}]; a
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CROSSREFS
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Cf. A070218.
Sequence in context: A120211 A095416 A162688 this_sequence A037100 A095969 A090608
Adjacent sequences: A070229 A070230 A070231 this_sequence A070233 A070234 A070235
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 05 2002
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EXTENSIONS
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Edited by Robert G. Wilson v (rgwv(AT)rgwv.com), May 06 2002
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