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

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, 0, 64, 0, 64, 0, 64, 0, 40, 72, 60, 44, 60, 60, 44, 60, 72, 224, 0, 208, 0, 192, 0, 192, 0, 208, 0, 176, 188, 188, 180, 196, 184, 184, 196, 180, 188, 188

Offset

1,1

Links

Seiichi Manyama, Rows n = 1..140, flattened

Example

First few rows are:
   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,  0, 64,  0, 64,  0, 64, 0;

Crossrefs

Cf. A000079 (row sums), A300307, A300328.

Sequence in context: A263788 A355335 A292144 * A298368 A072069 A230423

Adjacent sequences: A300321 A300322 A300323 * A300325 A300326 A300327

Keyword

nonn,tabl

Author

Seiichi Manyama, Mar 02 2018

Status

approved