A226620 Irregular array read by rows in which a(n) is the number of odd elements in each primitive '3x+k' cycle associated with A226619(n).

1, 0, 1, 2, 1, 3, 2, 1, 4, 3, 2, 1, 5, 4, 2, 3, 2, 1, 6, 5, 2, 4, 3, 2, 1, 7, 6, 5, 4, 4, 4, 3, 2, 1, 8, 7, 6, 6, 3, 5, 4, 3, 2, 1, 9, 8, 7, 8, 6, 5, 2, 2, 6, 5, 4, 3, 2, 1, 10, 9, 8, 7, 7, 5, 3, 5, 4, 5, 6, 5, 4, 3, 2, 1, 11, 10, 9, 8, 9, 8, 8, 8, 8, 4, 4, 7

Offset: 1

Author

Geoffrey H. Morley, Jul 02 2013

Keywords

• nonn
• tabf

Comments

The terms in row n are associated with cycles of length n (see A226619).

Examples

			The irregular array starts:
1, 0;
1;
2, 1;
3, 2, 1;
4, 3, 2, 1;
5, 4, 2, 3, 2, 1; ...
		

Links

• Geoffrey H. Morley, Rows 1..26 of array, flattened

Crossrefs

Cf. A226621.