A370210 - OEIS

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A370210

Number of chordless cycles in the n X n black bishop graph.

0, 0, 0, 3, 15, 97, 597, 5098, 47746, 582342, 7691278, 125339157, 2195109753, 45664819407, 1013323126923, 26022340062564, 709267685968788, 21939269071805596, 717007984481424300, 26196923530426606903

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

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..20.

Eric Weisstein's World of Mathematics, Black Bishop Graph

Eric Weisstein's World of Mathematics, Chordless Cycle

FORMULA

For n > 1, a(n) = A370224(n) - A303542(n).

CROSSREFS

Cf. A303542 (white bishop graph), A370224 (bishop graph).

Sequence in context: A076301 A112913 A109283 * A079689 A262751 A378890

Adjacent sequences: A370207 A370208 A370209 * A370211 A370212 A370213

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Feb 12 2024

STATUS

approved