The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A027331 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A027331

a(n) = Sum_{k=0..m} T(n,k) * T(n,k+2), where m=2 for n=2 and m=n+1 for n >= 3; and T is given by A026148.
(history; published version)

#8 by Alois P. Heinz at Sun Oct 27 19:59:31 EDT 2019

STATUS

proposed

approved

#7 by Sean A. Irvine at Sun Oct 27 16:10:58 EDT 2019

STATUS

editing

proposed

#6 by Sean A. Irvine at Sun Oct 27 16:10:53 EDT 2019

NAME

a(n) = Sum_{k=0..m} T(n,k) * T(n,k+2)}, 0<=k<=m, , where m=2 for n=2 and m=n+1 for n >= 3; and T is given by A026148.

DATA

5, 36, 293, 2374, 19398, 159072, 1310669, 10844525, 90088935, 751173656, 6284938344, 52752138077, 444072874534, 3748425872686, 31720368301774, 269056938823323, 2287158222456938, 19481849054942368, 166260043774604820, 1421400361753347588, 12172156656845655429

EXTENSIONS

More terms from Sean A. Irvine, Oct 27 2019

STATUS

approved

editing

#5 by Russ Cox at Fri Mar 30 18:56:15 EDT 2012

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

Clark Kimberling

Discussion

Fri Mar 30

18:56

OEIS Server: https://oeis.org/edit/global/285

#4 by N. J. A. Sloane at Sun Feb 20 03:00:00 EST 2005

NAME

a(n) = SUMSum{T(n,k)*T(n,k+2)}, 0<=k<=m, where m=2 for n=2 and m=n+1 for n >= 3; T given by A026148.

KEYWORD

nonn,new

nonn

#3 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

KEYWORD

nonn,new

nonn

AUTHOR

Clark Kimberling, (ck6(AT)evansville.edu)

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

NAME

a(n) = SUM{T(n,k)*T(n,k+2)}, 0<=k<=m, where m=2 for n=2 and m=n+1 for n >= 3; T given by A026148.

KEYWORD

nonn,new

nonn

AUTHOR

Clark Kimberling, ck6@cedar.(AT)evansville.edu

#1 by N. J. A. Sloane at Sat Dec 11 03:00:00 EST 1999

NAME

a(n) = SUM{T(n,k)*T(n,k+2)}, 0<=k<=m, where m=2 for n=2 and m=n+1 for n>=3; T given by A026148.

DATA

5, 36, 293, 2374, 19398, 159072, 1310669, 10844525, 90088935, 751173656, 6284938344, 52752138077, 444072874534

OFFSET

2,1

KEYWORD

nonn

AUTHOR

Clark Kimberling, ck6@cedar.evansville.edu

STATUS

approved