A279724 - OEIS

%I #4 Dec 21 2016 13:52:45

%S 1,2,2,3,5,5,4,8,14,14,5,11,23,41,41,6,14,32,68,122,122,7,17,41,95,

%T 203,365,365,8,20,50,122,284,608,1094,1094,9,23,59,149,365,851,1823,

%U 3281,3281,10,26,68,176,446,1094,2552,5468,9842,9842

%N Transpose of array A257943.

%F A(n,k) = (1 + 3^(k-1)*(2*n - 1))/2, n,k >= 1.

%e Array A begins as:

%e .      1   2   5   14   41   122   365   1094   3281    9842

%e .      2   5  14   41  122   365  1094   3281   9842   29525

%e .      3   8  23   68  203   608  1823   5468  16403   49208

%e .      4  11  32   95  284   851  2552   7655  22964   68891

%e .      5  14  41  122  365  1094  3281   9842  29525   88574

%e .      6  17  50  149  446  1337  4010  12029  36086  108257

%e .      7  20  59  176  527  1580  4739  14216  42647  127940

%e .      8  23  68  203  608  1823  5468  16403  49208  147623

%e .      9  26  77  230  689  2066  6197  18590  55769  167306

%e .     10  29  86  257  770  2309  6926  20777  62330  186989

%t (* Array: *)

%t Grid[Table[(1 + 3^(k - 1)*(2*n - 1))/2, {n, 10}, {k, 10}]]

%t (* Array antidiagonals flattened (gives this sequence): *)

%t Flatten[Table[(1 + 3^(k - 1)*(2*(n - k) + 1))/2, {n, 10}, {k, n}]]

%Y Cf. A191450, A254051, A257943.

%K nonn,tabl

%O 1,2

%A _L. Edson Jeffery_, Dec 17 2016