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Triangle T(n, k) read by rows; given by [1, 1, 1, 1, 1, ...] DELTA [1, 1, 2, 5, 14, 42, 132, 429, 1430, ...] (A000108) where DELTA is Deléham's operator defined in A084938.
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%I #10 Aug 08 2015 10:58:45

%S 1,1,1,2,4,2,5,16,17,6,14,67,122,99,30,42,294,891,1406,1105,338,132,

%T 1346,7072,22789,40868,35719,11782,429,6397,62683,466417,2021657,

%U 4272586,4067833,1407202,1430,31405,621689,12035611,138185753

%N Triangle T(n, k) read by rows; given by [1, 1, 1, 1, 1, ...] DELTA [1, 1, 2, 5, 14, 42, 132, 429, 1430, ...] (A000108) where DELTA is Deléham's operator defined in A084938.

%H Alois P. Heinz, <a href="/A085843/b085843.txt">Rows n = 0..60, flattened</a>

%e 1;

%e 1,1;

%e 2,4,2;

%e 5,16,17,6;

%e 14,67,122,99,30; ...

%Y Cf. A000108, A261048 (2nd column).

%K nonn,tabl

%O 0,4

%A _N. J. A. Sloane_, Aug 16 2003