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Triangular array: T(n,1)=T(n,n)=n, for 1<k<n: T(n,k) = concatenation of T(n-1,k-1) and T(n-1,k) in binary representation.
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%I #3 Mar 30 2012 18:50:30

%S 1,2,2,3,10,3,4,58,43,4,5,314,3755,348,5,6,2874,1289899,1922908,2789,

%T 6,7,27450,6028504747,2705116190556,7876233957,22318,7,8,256826,

%U 235799733055147,26513644272422368401244,23236771140644124347109

%N Triangular array: T(n,1)=T(n,n)=n, for 1<k<n: T(n,k) = concatenation of T(n-1,k-1) and T(n-1,k) in binary representation.

%e Triangle begins:..................binary:

%e ............1...........................1

%e .........2.....2...................10......10

%e ......3....10.....3............11.....1010.....11

%e ...4....58....43.....4......100..111010..101011..100.

%K nonn,tabl

%O 1,2

%A _Reinhard Zumkeller_, Jan 23 2003