The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A359407 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A359407

Product_{n>=1} (1 + a(n) * x^n) = 1 + Sum_{n>=1} (n * (n + 1) / 2) * x^n.
(history; published version)

#14 by Vaclav Kotesovec at Fri Dec 30 10:55:03 EST 2022

STATUS

reviewed

approved

#13 by Michel Marcus at Fri Dec 30 10:13:39 EST 2022

STATUS

proposed

reviewed

#12 by Seiichi Manyama at Fri Dec 30 09:35:54 EST 2022

STATUS

editing

proposed

#11 by Seiichi Manyama at Fri Dec 30 09:35:27 EST 2022

LINKS

Seiichi Manyama, <a href="/A359407/b359407.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#10 by Michael De Vlieger at Fri Dec 30 09:20:02 EST 2022

STATUS

proposed

approved

#9 by Seiichi Manyama at Fri Dec 30 09:00:59 EST 2022

STATUS

editing

proposed

Discussion

Fri Dec 30

09:02

Seiichi Manyama: Changed to a formula that is not misinterpreted.

09:07

Jon E. Schoenfield: Thanks!

#8 by Seiichi Manyama at Fri Dec 30 09:00:56 EST 2022

NAME

Product_{n>=1} (1 + a(n) * x^n) = 1 + Sum_{n>=1} (n * (n + 1) / 2 ) * x^n.

STATUS

proposed

editing

#7 by Seiichi Manyama at Fri Dec 30 06:22:27 EST 2022

STATUS

editing

proposed

Discussion

Fri Dec 30

08:57

Jon E. Schoenfield: Does “n * (n + 1) / 2 * x^n” mean “(n * (n + 1) / 2) * x^n” or does it mean “n * (n + 1) / (2 * x^n)”?

#6 by Seiichi Manyama at Fri Dec 30 06:18:32 EST 2022

CROSSREFS

Cf. A000217, A147559.

#5 by Seiichi Manyama at Fri Dec 30 06:17:22 EST 2022

KEYWORD

sign,changed,look