A116377 Number of partitions of n into parts with digital root = 7.
0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 2, 0, 1, 1, 0, 1, 0, 2, 0, 2, 1, 1, 1, 0, 2, 0, 3, 1, 3, 1, 1, 2, 0, 3, 1, 4, 1, 3, 2, 1, 3, 1, 5, 1, 5, 2, 4, 3, 2, 5, 1, 6, 2, 7, 3, 5, 5, 2, 7, 2, 9, 3, 9, 5, 6, 7, 3, 10, 3, 12, 5, 11, 7, 7, 11, 4, 14, 5, 16, 7, 14
Offset: 1
Examples
a(48) = #{34+7+7, 25+16+7, 16+16+16} = 3.
Links
- Eric Weisstein's World of Mathematics, Digital Root
Crossrefs
Cf. A010888.
A147706. [From Reinhard Zumkeller, Nov 11 2008]
Comments