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Search: id:A018249
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| 1, 2, 6, 18, 52, 130, 310, 718, 1618, 3670, 8160, 17862, 38872, 84016, 180502, 386092, 821640, 1742536, 3681130, 7754076, 16290046, 34136028, 71378568, 148948138, 310248240, 645155196, 1339484196, 2777105128, 5750079046
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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Paul Cooijmans, Numbers, Item 18.
Paul Cooijmans, Short Test For Genius, Item 29.
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CROSSREFS
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Equals A033844 - 1. Cf. A000040, A033844, A051438, A051440, A051439.
Adjacent sequences: A018246 A018247 A018248 this_sequence A018250 A018251 A018252
Sequence in context: A081154 A002900 A034525 this_sequence A128104 A027059 A078484
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KEYWORD
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nonn,easy
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AUTHOR
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njas
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Search completed in 0.002 seconds
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