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Search: id:A129284
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A129284 A129150(n) / 4. +0
5
2, 3, 4, 8, 20, 44, 92, 188, 380, 856, 2148, 5024, 17616, 58768, 176320, 755904, 3305920, 13885184 (list; graph; listen)
OFFSET

0,1

FORMULA

a(n+1) = A129283(a(n)), a(0) = 2.

CROSSREFS

Cf. A129285, A129286, A051674.

Sequence in context: A102276 A105055 A108506 this_sequence A100997 A128657 A091930

Adjacent sequences: A129281 A129282 A129283 this_sequence A129285 A129286 A129287

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Apr 07 2007

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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