A349780 - OEIS

%I #12 Jul 30 2023 17:44:00

%S 1,0,1,0,1,3,0,1,7,13,0,1,13,49,73,0,1,21,141,381,501,0,1,31,331,1531,

%T 3331,4051,0,1,43,673,4873,17473,32593,37633,0,1,57,1233,12993,71793,

%U 212913,354033,394353,0,1,73,2089,30313,241993,1088713,2782153,4233673,4596553

%N Triangle read by rows, T(n, k) = A000262(n) - A349776(n, n - k) for n > 0 and T(0, 0) = 1.

%e [0] 1;

%e [1] 0, 1;

%e [2] 0, 1,  3;

%e [3] 0, 1,  7,   13;

%e [4] 0, 1, 13,   49,    73;

%e [5] 0, 1, 21,  141,   381,    501;

%e [6] 0, 1, 31,  331,  1531,   3331,    4051;

%e [7] 0, 1, 43,  673,  4873,  17473,   32593,   37633;

%e [8] 0, 1, 57, 1233, 12993,  71793,  212913,  354033, 394353;

%e [9] 0, 1, 73, 2089, 30313, 241993, 1088713, 2782153, 4233673, 4596553.

%Y Row sums are A052852 for n >= 1.

%Y Cf. A000262, A349776.

%K nonn,tabl

%O 0,6

%A _Peter Luschny_, Nov 30 2021