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A185056 Number of ways to place n nonattacking composite pieces bishop + semi-rook on an n X n board. 0
1, 2, 5, 24, 125, 796, 5635, 48042, 453947, 4834872, 56433455, 727449366, 10099103269, 152097526360, 2449915208271, 42295879864692 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Two semi-rooks do not attack each other if they are in the same column.
LINKS
CROSSREFS
Sequence in context: A364229 A052111 A176473 * A346204 A330512 A194349
KEYWORD
nonn,hard
AUTHOR
Vaclav Kotesovec, Dec 22 2011
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)