The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A346588 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A346588

Decimal expansion of the sum of reciprocals of tribonacci numbers A000213.
(history; published version)

#11 by N. J. A. Sloane at Tue Aug 17 10:49:31 EDT 2021

STATUS

proposed

approved

#10 by Amiram Eldar at Mon Jul 26 09:59:42 EDT 2021

STATUS

editing

proposed

#9 by Amiram Eldar at Mon Jul 26 09:59:34 EDT 2021

MATHEMATICA

RealDigits[Total[1/LinearRecurrence[{1, 1, 1}, {1, 1, 1}, 500]], 10, 105][[1]] (* Amiram Eldar, Jul 26 2021 *)

STATUS

proposed

editing

#8 by Kevin Ryde at Sun Jul 25 01:16:27 EDT 2021

STATUS

editing

proposed

#7 by Kevin Ryde at Sun Jul 25 01:16:08 EDT 2021

NAME

Sum Decimal expansion of the sum of reciprocals of tribonacci numbers A000213.

CROSSREFS

Cf. A000045, A0000213, A000213, A079586, A084119, A093540, A153386, A153387.

STATUS

proposed

editing

Discussion

Sun Jul 25

01:17

Jon E. Schoenfield: Oops!  'Sorry about the extra 0!

#6 by Jon E. Schoenfield at Sun Jul 25 01:01:07 EDT 2021

STATUS

editing

proposed

#5 by Jon E. Schoenfield at Sun Jul 25 01:00:37 EDT 2021

NAME

Sum of reciprocal reciprocals of tribonacci numbers A000213.

CROSSREFS

Cf. A000045, A000073, A0000213, A079586, A084119, A093540, A153386, A153387.

#4 by Jon E. Schoenfield at Sun Jul 25 01:00:03 EDT 2021

DATA

3, 7, 7, 3, 9, 4, 8, 0, 6, 0, 1, 9, 7, 0, 1, 5, 8, 1, 8, 3, 8, 5, 4, 0, 2, 4, 2, 6, 6, 2, 9, 5, 1, 2, 7, 4, 9, 7, 6, 8, 0, 7, 4, 1, 7, 3, 2, 2, 2, 5, 8, 4, 3, 8, 0, 8, 8, 1, 3, 1, 6, 1, 8, 5, 0, 8, 4, 3, 3, 7, 8, 3, 8, 1, 7, 1, 7, 8, 1, 7, 2, 6, 3, 6, 5, 0, 4, 1, 2, 2, 5, 5, 8, 7, 9, 7, 4, 2, 3, 4, 5, 7, 5, 0, 1

EXAMPLE

3.773948060197017739480601970158183854024266295127497680741732225...

KEYWORD

nonn,cons,more,changed

EXTENSIONS

More terms from Jon E. Schoenfield, Jul 25 2021

STATUS

proposed

editing

#3 by Christoph B. Kassir at Sat Jul 24 21:31:21 EDT 2021

STATUS

editing

proposed

Discussion

Sat Jul 24

22:14

Jon E. Schoenfield: Does the Name mean "Sum of reciprocals of tribonacci numbers", or something else?

23:57

Jon E. Schoenfield: For 1/1 + 1/1 + 1/2 + 1/4 +1/7 + 1/13 + 1/24 + 1/44 + ... I get something close to 3.0612290851054... Have I summed them incorrectly, or have you, or is your constant something else?

Sun Jul 25

00:50

Kevin Ryde: The other Tribonaccis A000213 ?  Be sure to have a formula "Equals Sum_{etc} etc".  Crossrefs to other reciprocals ok, but I'd leave out plain Fibonaccis A000045.  Convergence will be fast enough to fill up the DATA when you're ready.

#2 by Christoph B. Kassir at Sat Jul 24 21:31:11 EDT 2021

NAME

allocated for Christoph B. Kassir

Sum of reciprocal tribonacci numbers.

DATA

3, 7, 7, 3, 9, 4, 8, 0, 6, 0, 1, 9, 7, 0, 1

OFFSET

1,1

EXAMPLE

3.77394806019701...

CROSSREFS

Cf. A000045, A000073, A079586, A084119, A093540, A153386, A153387.

KEYWORD

allocated

nonn,cons,more

AUTHOR

Christoph B. Kassir, Jul 24 2021

STATUS

approved

editing