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Search: id:A022026
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A022026 Define the sequence T(a_0,a_1) by a_{n+2} is the greatest integer such that a_{n+2}/a_{n+1}<a_{n+1}/a_n for n >= 0 . This is T(2,15). +0
1
2, 15, 112, 836, 6240, 46576, 347648, 2594880, 19368448, 144568064, 1079070720, 8054293504, 60118065152, 448727347200, 3349346516992, 24999862747136, 186601515909120, 1392812676284416, 10396095346638848 (list; graph; listen)
OFFSET

0,1

FORMULA

G.f.: (2-x)/(1-8x+4x^2). - David Boyd and Ralf Stephan, Apr 15 2004

CROSSREFS

Equals A028859(2n+2)/4.

Sequence in context: A037635 A062808 A140637 this_sequence A026113 A052874 A074622

Adjacent sequences: A022023 A022024 A022025 this_sequence A022027 A022028 A022029

KEYWORD

nonn

AUTHOR

R. K. Guy (rkg(AT)cpsc.ucalgary.ca)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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