0,4

McCombinations: in 2002, McDonalds advertised a McChoice menu of 8 items under the heading "40,312 combinations" rather than the more obvious 2^8-1=255 (A000225). The Advertising Standards Authority "considered that the number quoted in the advertisement was not necessarily so exaggerated as to be misleading". - Henry Bottomley (se16(AT)btinternet.com), May 01 2003

Index entries for sequences related to factorial numbers

Advertising Standards Authority, McDonald's Restaurants Ltd.

a(n) = n*a(n-1)+n(n-2) = n*A033312(n-1) = A000142(n)-n. - Henry Bottomley (se16(AT)btinternet.com), May 01 2003

Sequence in context: A119693 A139471 A108911 this_sequence A001652 A128910 A037788

Adjacent sequences: A005093 A005094 A005095 this_sequence A005097 A005098 A005099

nonn

njas