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Search: id:A138835
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| 4, 64, 65536, 1073741824, 309485009821345068724781056, 85070591730234615865843651857942052864
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OFFSET
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1,1
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COMMENT
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Also, bisection of superperfect numbers A019279, if there are no odd superperfect numbers.
Next terms have 183, 663 and more digits and are therefore not listed. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 22 2008
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CROSSREFS
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Cf. A019279, A061652, A099057, A099058, A134721, A134722, A138834.
Sequence in context: A146520 A030176 A033635 this_sequence A119601 A058438 A041119
Adjacent sequences: A138832 A138833 A138834 this_sequence A138836 A138837 A138838
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KEYWORD
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nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Apr 06 2008
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