cp's OEIS Frontend

A349780 Triangle read by rows, T(n, k) = A000262(n) - A349776(n, n - k) for n > 0 and T(0, 0) = 1.

%I A349780 #12 Jul 30 2023 17:44:00
%S A349780 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 A349780 3331,4051,0,1,43,673,4873,17473,32593,37633,0,1,57,1233,12993,71793,
%U A349780 212913,354033,394353,0,1,73,2089,30313,241993,1088713,2782153,4233673,4596553
%N A349780 Triangle read by rows, T(n, k) = A000262(n) - A349776(n, n - k) for n > 0 and T(0, 0) = 1.
%e A349780 [0] 1;
%e A349780 [1] 0, 1;
%e A349780 [2] 0, 1,  3;
%e A349780 [3] 0, 1,  7,   13;
%e A349780 [4] 0, 1, 13,   49,    73;
%e A349780 [5] 0, 1, 21,  141,   381,    501;
%e A349780 [6] 0, 1, 31,  331,  1531,   3331,    4051;
%e A349780 [7] 0, 1, 43,  673,  4873,  17473,   32593,   37633;
%e A349780 [8] 0, 1, 57, 1233, 12993,  71793,  212913,  354033, 394353;
%e A349780 [9] 0, 1, 73, 2089, 30313, 241993, 1088713, 2782153, 4233673, 4596553.
%Y A349780 Row sums are A052852 for n >= 1.
%Y A349780 Cf. A000262, A349776.
%K A349780 nonn,tabl
%O A349780 0,6
%A A349780 _Peter Luschny_, Nov 30 2021