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Westminster chimes at 15-minute intervals (1).
1

%I #9 Oct 01 2018 20:11:14

%S 1,2,3,5,1,2,3,6,1,2,3,7,1,2,3,8,1,2,3,9,1,2,3,10,1,2,3,11,1,2,3,12,1,

%T 2,3,13,1,2,3,14,1,2,3,15,1,2,3,16,1,2,3,5,1,2,3,6,1,2,3,7,1,2,3,8,1,

%U 2,3,9,1,2,3,10,1,2,3,11,1,2,3,12,1,2,3,13,1,2,3,14,1,2,3,15,1,2,3,16

%N Westminster chimes at 15-minute intervals (1).

%t With[{c=Table[{{1,2,3},n},{n,5,16}]//Flatten},Join[c,c]] (* _Harvey P. Dale_, Oct 01 2018 *)

%K nonn

%O 0,2

%A _Colin Mallows_