The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A071766

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A071766

Denominator of the continued fraction expansion whose terms are the first-order differences of exponents in the binary representation of 4n, with the exponents of 2 being listed in descending order.
(history; published version)

#68 by Peter Luschny at Wed Apr 24 04:14:24 EDT 2024

STATUS

reviewed

approved

#67 by Joerg Arndt at Wed Apr 24 03:50:36 EDT 2024

STATUS

proposed

reviewed

#66 by Michel Marcus at Wed Apr 24 02:40:33 EDT 2024

STATUS

editing

proposed

#65 by Michel Marcus at Wed Apr 24 02:40:21 EDT 2024

COMMENTS

1,

1, 2,

1, 2, 3, 3,

1, 2, 3, 3, 4, 5, 4, 5,

1, 2, 3, 3, 4, 5, 4, 5, 5, 7, 7, 8, 5, 7, 7, 8,

1, 2, 3, 3, 4, 5, 4, 5, 5, 7, 7, 8, 5, 7, 7, 8, 6, 9, 10, 11, 9, 12, 11, 13, 6, 9,

STATUS

proposed

editing

#64 by Mikhail Kurkov at Wed Apr 24 02:36:59 EDT 2024

STATUS

editing

proposed

#63 by Mikhail Kurkov at Wed Apr 24 02:36:19 EDT 2024

PROG

(PARI) a(n) = if(n==0, 1, my(x=1, y=1); for(i=0, logint(n, 2), if(bittest(n, i), [x, y]=[x+y, x], [x, y]=[x, x+y])); y) \\ Mikhail Kurkov, Mar 10 2023 [verification needed]

STATUS

approved

editing

Discussion

Wed Apr 24

02:36

Mikhail Kurkov: Program is based on a conjecture.

#62 by Michael De Vlieger at Sun Apr 21 21:15:03 EDT 2024

STATUS

proposed

approved

#61 by Jon E. Schoenfield at Sun Apr 21 21:14:09 EDT 2024

STATUS

editing

proposed

#60 by Jon E. Schoenfield at Sun Apr 21 21:13:36 EDT 2024

PROG

(PARI) a(n) = if(n==0, 1, my(x=1, y=1); for(i=0, logint(n, 2), if(bittest(n, i), [x, y]=[x+y, x], [x, y]=[x, x+y])); y) \\ Mikhail Kurkov, Mar 10 2023 [verification needed]

STATUS

approved

editing

#59 by Michael De Vlieger at Fri Mar 10 16:35:23 EST 2023

STATUS

reviewed

approved