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A020697
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Number of factors of A019505(n).
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2
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1, 2, 3, 4, 6, 8, 10, 12, 16, 20, 24, 30, 36, 48, 60, 72, 84, 96, 120, 144, 168, 192, 224, 256, 320, 384, 448, 512, 576, 672, 768, 896, 1024, 1152, 1344, 1536, 1792, 2048, 2304, 2688, 3072, 3456, 4032, 4608, 5376, 6144, 6912, 8064, 9216, 10368, 11520, 12960
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Conjecture: all numbers of the form 3*2^n are in this sequence - J. Lowell (jhbubby(AT)mindspring.com), Mar 12 2008. However, this is false: 3*2^12 = 12288 is the smallest counterexample to above conjecture. - Klaus Brockhaus, Jul 24 2008
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CROSSREFS
| Sequence in context: A191283 A200678 A088881 * A175381 A074715 A034287
Adjacent sequences: A020694 A020695 A020696 * A020698 A020699 A020700
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KEYWORD
| nonn
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AUTHOR
| J. Lowell (jhbubby(AT)avana.net). Corrected Mar 20 2008.
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EXTENSIONS
| More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jul 24 2008
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