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A100022 Number of digits in A090162(n). +0
2
1, 4, 29, 205, 1412, 9688, 66416, 455237, 3120256 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n+1)/a(n) -> Phi^4 = 6.8541... - Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 23 2004

MATHEMATICA

f[n_] := Floor[ Log[10, Binomial[ Fibonacci[2n]Fibonacci[2n + 1], Fibonacci[2n - 1]Fibonacci[2n] - 1]] + 1]; Do[ Print[ f[n]], {n, 9}] (from Robert G. Wilson v Nov 23 2004)

CROSSREFS

Sequence in context: A121191 A129587 A143551 this_sequence A001883 A135429 A079756

Adjacent sequences: A100019 A100020 A100021 this_sequence A100023 A100024 A100025

KEYWORD

nonn,base

AUTHOR

Eric Weisstein (eric(AT)weisstein.com), Nov 23, 2003 and Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Dec 01 2003

EXTENSIONS

a(7), a(8) & a(9) from Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 23 2004

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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