The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A100193 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A100193

a(n) = Sum_{k=0..n} binomial(2n,n+k)*3^k.
(history; published version)

#35 by OEIS Server at Thu Dec 28 07:41:21 EST 2023

LINKS

Seiichi Manyama, <a href="/A100193/b100193_1.txt">Table of n, a(n) for n = 0..1000</a>

#34 by Vaclav Kotesovec at Thu Dec 28 07:41:21 EST 2023

STATUS

proposed

approved

Discussion

Thu Dec 28

07:41

OEIS Server: Installed first b-file as b100193.txt.

#33 by Seiichi Manyama at Thu Dec 28 06:31:36 EST 2023

STATUS

editing

proposed

#32 by Seiichi Manyama at Thu Dec 28 06:11:49 EST 2023

FORMULA

a(n) = Sum_{k=0..n} C(2n,k)*3^(n-k). - Paul Barry, Jan 11 2007

Discussion

Thu Dec 28

06:13

Seiichi Manyama: This formula is equivalent to the third formula.

#31 by Seiichi Manyama at Thu Dec 28 06:11:22 EST 2023

LINKS

Seiichi Manyama, <a href="/A100193/b100193_1.txt">Table of n, a(n) for n = 0..1000</a>

STATUS

approved

editing

#30 by Wesley Ivan Hurt at Sun Sep 08 01:55:36 EDT 2019

STATUS

reviewed

approved

#29 by Joerg Arndt at Sun Sep 08 01:52:31 EDT 2019

STATUS

proposed

reviewed

#28 by Michel Marcus at Sun Sep 08 01:23:51 EDT 2019

STATUS

editing

proposed

#27 by Michel Marcus at Sun Sep 08 01:23:48 EDT 2019

CROSSREFS

Cf. A032443, A100192, A000108, A127357.

STATUS

reviewed

editing

#26 by Wesley Ivan Hurt at Sun Sep 08 01:22:16 EDT 2019

STATUS

proposed

reviewed