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A243832 Number A(n,k) of Dyck paths of semilength n having exactly six (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of k, where 1=U=(1,1) and 0=D=(1,-1); square array A(n,k), n>=0, k>=0, read by antidiagonals. 13

%I #8 Jan 24 2019 16:14:12

%S 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,132,0,0,0,0,0,

%T 0,132,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,21,0,0,0,0,0,0,0,0,0,1,196,0,

%U 0,0,0,0,0,0,0,0,0,28,1176,0,0,0,0,0,0,0,0,0,1,0,336,5292,0,0,0,0,0,0,0,0,0,0,7,0,2520,19404,0,0

%N Number A(n,k) of Dyck paths of semilength n having exactly six (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of k, where 1=U=(1,1) and 0=D=(1,-1); square array A(n,k), n>=0, k>=0, read by antidiagonals.

%H Alois P. Heinz, <a href="/A243832/b243832.txt">Antidiagonals n = 0..140, flattened</a>

%e Square array A(n,k) begins:

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 132, 132, 1, 0, 0, 0, 0, 0, 0, 0, 0, ...

%e 0, 0, 21, 1, 0, 1, 0, 0, 0, 0, 1, ...

%e 0, 0, 196, 28, 0, 7, 0, 1, 0, 0, 1, ...

%e 0, 0, 1176, 336, 0, 56, 0, 9, 0, 0, 15, ...

%e 0, 0, 5292, 2520, 0, 336, 0, 80, 0, 0, 64, ...

%Y Main diagonal gives A243775 or column k=6 of A243752.

%Y Cf. A243753, A243827, A243828, A243829, A243830, A243831, A243833, A243834, A243835, A243836.

%K nonn,tabl

%O 0,28

%A _Alois P. Heinz_, Jun 11 2014

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