The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A057861 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A057861

floor[2^n/Fibonacci(n)].
(history; published version)

#2 by Russ Cox at Fri Mar 30 18:51:28 EDT 2012

AUTHOR

_Henry Bottomley (se16(AT)btinternet.com), _, Sep 08 2000

Discussion

Fri Mar 30

18:51

OEIS Server: https://oeis.org/edit/global/247

#1 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

floor[2^n/Fibonacci(n)].

DATA

2, 4, 4, 5, 6, 8, 9, 12, 15, 18, 23, 28, 35, 43, 53, 66, 82, 101, 125, 155, 191, 236, 292, 361, 447, 552, 683, 844, 1044, 1290, 1595, 1971, 2437, 3012, 3723, 4602, 5689, 7032, 8692, 10744, 13280, 16415, 20291, 25081, 31002, 38320, 47366, 58548, 72370

OFFSET

1,1

COMMENTS

Growth of a(n) is roughly 4/(1+sqrt(5)) or about 1.236...

FORMULA

a(n) = [A000079(n)/A000045(n)] = (A000079(n) - A057862(n))/A000045(n)

KEYWORD

nonn

AUTHOR

Henry Bottomley (se16(AT)btinternet.com), Sep 08 2000

STATUS

approved