The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A374280 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A374280

a(n) is the maximal determinant of an n X n symmetric Toeplitz matrix having 0 on the main diagonal and all the integers 1, 2, ..., n-1 off-diagonal.
(history; published version)

#14 by Hugo Pfoertner at Sun Jul 07 05:46:00 EDT 2024

STATUS

reviewed

approved

#13 by Michel Marcus at Sun Jul 07 05:11:36 EDT 2024

STATUS

proposed

reviewed

#12 by Stefano Spezia at Sun Jul 07 05:02:59 EDT 2024

STATUS

editing

proposed

Discussion

Sun Jul 07

05:04

Stefano Spezia: The replaced xref has been withdrawn by me before two days

#11 by Stefano Spezia at Sun Jul 07 04:59:56 EDT 2024

CROSSREFS

Cf. A085807 (minimal permanent), A374279 (minimal), A374281 (maximal absolute value), A374282 (minimal nonzero absolute value), A374283 (maximal permanent), A374284 (minimal permanent).

STATUS

approved

editing

#10 by N. J. A. Sloane at Wed Jul 03 12:47:55 EDT 2024

STATUS

proposed

approved

#9 by Stefano Spezia at Tue Jul 02 13:32:38 EDT 2024

STATUS

editing

proposed

#8 by Stefano Spezia at Tue Jul 02 13:29:19 EDT 2024

DATA

1, 0, 0, -1, 8, 28, 282, 27495, 581268, 17344692, 1246207300, 33366771123

KEYWORD

nonn,sign,hard,more,changed

STATUS

proposed

editing

#7 by Stefano Spezia at Tue Jul 02 12:03:41 EDT 2024

STATUS

editing

proposed

#6 by Stefano Spezia at Tue Jul 02 11:30:37 EDT 2024

CROSSREFS

Cf. A374279 (minimal), A374281 (maximal absolute value), A374282 (minimal nonzero absolute value), A374283 (minimal maximal permanent), A374284 (maximal minimal permanent).

#5 by Stefano Spezia at Tue Jul 02 11:02:40 EDT 2024

CROSSREFS

Cf. A085807, A085750, A358324.