A234533 Smallest number of hex numbers summing to n.

1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 7, 8, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 7, 8, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 7, 2, 3, 4, 5, 6, 7, 8, 3

Offset: 1

Author

Allan C. Wechsler, Dec 27 2013

Keywords

• nonn

Comments

This sequence is to A003215 as A002828 is to A000290, and as A061336 is to A000217.

Examples

			a(21) = 3, because 21 = 19 + 1 + 1 = 7 + 7 + 7, so there are two ways to express 21 as the sum of 3 hex numbers, but no way to express 21 as the sum of 2 hex numbers.
		

Links

• Lars Blomberg, Table of n, a(n) for n = 1..10000

Extensions

a(27)-a(87) from Lars Blomberg, Jan 07 2014