A369121 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A369121

a(n) = A369134(n, n).

-1, 1, -1, 3, -1, 5, -15, 105, -21, 105, -315, 2475, -99, 1001, -1001, 15015, -105105, 23205, -663, 1322685, -101745, 5595975, -2611455, 60063465, -1225785, 15935205, -51555075, 4686825, -5368545, 40970475, -40970475, 302703526125

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

Table of n, a(n) for n=0..31.

CROSSREFS

Cf. A369134, A369122.

Sequence in context: A291665 A181836 A124740 * A347556 A368340 A338172

Adjacent sequences: A369118 A369119 A369120 * A369122 A369123 A369124

KEYWORD

sign

AUTHOR

Peter Luschny, Jan 14 2024

STATUS

approved