The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A060542 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A060542

a(n) = (1/6)*multinomial(3*n;n,n,n).
(history; published version)

#40 by Alois P. Heinz at Sat Jul 29 11:58:25 EDT 2023

STATUS

editing

approved

#39 by Alois P. Heinz at Sat Jul 29 11:58:22 EDT 2023

MAPLE

a:= n-> combinat[multinomial](3*n, n$3, 0)/3!:

STATUS

approved

editing

#38 by Alois P. Heinz at Sat Jul 29 11:57:56 EDT 2023

STATUS

editing

approved

#37 by Alois P. Heinz at Sat Jul 29 11:57:50 EDT 2023

MAPLE

a:= n-> combinat[multinomial](3*n, n$3, 0)/3!:

seq(a(n), n=1..18); # Alois P. Heinz, Jul 29 2023

STATUS

approved

editing

#36 by Peter Luschny at Thu Dec 27 05:20:27 EST 2018

STATUS

reviewed

approved

#35 by Joerg Arndt at Thu Dec 27 03:17:50 EST 2018

STATUS

proposed

reviewed

Discussion

Thu Dec 27

03:38

Michel Marcus: Once we should try to add a wrong term (when bfile exists) to see if the system prevents such a thing (I know it does when adding a bfile that does not match the data).

#34 by Andrew Howroyd at Wed Dec 26 21:53:13 EST 2018

STATUS

editing

proposed

#33 by Andrew Howroyd at Wed Dec 26 21:48:32 EST 2018

EXTENSIONS

a(17)-a(18) from Andrew Howroyd, Dec 15 2018

STATUS

reviewed

editing

Discussion

Wed Dec 26

21:53

Andrew Howroyd: I think the 2 extra terms should be added to the data (it was below normal length), but I am not sure what is best wording if any for the extensions field. From an accountability/blame perspective it probably should be my name, but that can also be obtained from history in the fairly unlikely event of an error. In any case, I am ok with anything that works.

#32 by Joerg Arndt at Sun Dec 23 03:44:41 EST 2018

STATUS

proposed

reviewed

Discussion

Mon Dec 24

07:08

Georg Fischer: I'm a bit confused: the terms a(17)-a(18) - any a(19..100) - are in the b-file of Harry. J. Smith since 2010?

Wed Dec 26

16:36

Peter Luschny: I agree, that's a little odd.

#31 by Jianing Song at Sat Dec 22 23:45:41 EST 2018

STATUS

editing

proposed