The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A370095

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A370095

a(n) is the number of inequivalent binary delta-matroids on a ground set of size n.
(history; published version)

#15 by N. J. A. Sloane at Wed Feb 14 14:27:44 EST 2024

STATUS

editing

approved

#14 by N. J. A. Sloane at Wed Feb 14 14:27:29 EST 2024

NAME

a(n) is the number of nonequivalent inequivalent binary delta-matroids on a ground set of size n.

STATUS

proposed

editing

Discussion

Wed Feb 14

14:27

N. J. A. Sloane: "inequivalent"

#13 by Stefano Spezia at Sun Feb 11 05:44:23 EST 2024

STATUS

editing

proposed

#12 by Stefano Spezia at Sun Feb 11 05:40:58 EST 2024

FORMULA

a(n) <= A006125(n+1).

CROSSREFS

Cf. A006125, A370096.

#11 by Stefano Spezia at Sun Feb 11 05:40:05 EST 2024

CROSSREFS

Cf. A006125, A370096.

#10 by Stefano Spezia at Sun Feb 11 05:39:50 EST 2024

FORMULA

a(n) <= A006125(n+1).

#9 by Stefano Spezia at Sun Feb 11 05:38:01 EST 2024

FORMULA

a(n) <= A006125(n+1).

CROSSREFS

Cf. A006125, A370096.

STATUS

proposed

editing

#8 by Michel Marcus at Sat Feb 10 03:14:23 EST 2024

STATUS

editing

proposed

#7 by Michel Marcus at Sat Feb 10 03:14:17 EST 2024

LINKS

Daniel Yuschak, <a href="https://doi.org/10.1016/j.ejc.2024.103925">Delta-matroids whose twist polynomials are monomials</a>, European Journal of Combinatorics 118, 103925 (2024).

STATUS

proposed

editing

#6 by Stefano Spezia at Fri Feb 09 17:25:14 EST 2024

STATUS

editing

proposed