cp's OEIS Frontend

A300324 Triangle read by rows: row n gives the number of solutions to +-1 +- 3 +- 6 +- ... +- n*(n+1)/2 == k (mod n).

%I A300324 #28 Mar 04 2018 10:30:04
%S A300324 2,4,0,0,4,4,8,0,8,0,8,4,8,8,4,32,0,16,0,16,0,24,24,16,12,12,16,24,64,
%T A300324 0,64,0,64,0,64,0,40,72,60,44,60,60,44,60,72,224,0,208,0,192,0,192,0,
%U A300324 208,0,176,188,188,180,196,184,184,196,180,188,188
%N A300324 Triangle read by rows: row n gives the number of solutions to +-1 +- 3 +- 6 +- ... +- n*(n+1)/2 == k (mod n).
%H A300324 Seiichi Manyama, <a href="/A300324/b300324.txt">Rows n = 1..140, flattened</a>
%e A300324 First few rows are:
%e A300324    2;
%e A300324    4,  0;
%e A300324    0,  4,  4;
%e A300324    8,  0,  8,  0;
%e A300324    8,  4,  8,  8,  4;
%e A300324   32,  0, 16,  0, 16,  0;
%e A300324   24, 24, 16, 12, 12, 16, 24;
%e A300324   64,  0, 64,  0, 64,  0, 64, 0;
%Y A300324 Cf. A000079 (row sums), A300307, A300328.
%K A300324 nonn,tabl
%O A300324 1,1
%A A300324 _Seiichi Manyama_, Mar 02 2018