A167413 Irregular array with the first differences of row A167384(n,.) in row n.

2, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 4, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 5, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6

Offset: 0

Author

Paul Curtz, Nov 03 2009

Keywords

• nonn
• tabf

Comments

The left column has 2 two's, 4 three's, 6 four's,... ,2*k-2 k's.

Entries in the remaining columns are all 1.

If one looks at the flattened sequence (2), (2), (1,3), (1,3), (1,3),.. in blocks of 1, 1, 2, 2, 2,.. , A000194(k) terms, the sum of entries in the subsequence in block number k is A001670(k).

Examples

			2;
2, 1;
3, 1;
3, 1;
3, 1;
3, 1, 1;
4, 1, 1;
4, 1, 1;
4, 1, 1;
4, 1, 1;
4, 1, 1;
4, 1, 1, 1;
5, 1, 1, 1;
5, 1, 1, 1;
5, 1, 1, 1;
5, 1, 1, 1;
5,...
		

Crossrefs

Cf. A167381.