A068950 Digital roots of A068809.

1, 4, 9, 4, 7, 1, 4, 9, 4, 7, 9, 4, 7, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 1, 4, 7, 1, 4, 7, 9, 4, 9, 1, 4, 7, 9, 1, 4, 9, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4

Offset: 1

Author

Francois Jooste (phukraut(AT)hotmail.com), Mar 15 2002

Keywords

• more
• nonn
• base

Examples

			a(4)=4 since A068809(4)=49 and so 4+9=13 and 1+3=4.
		

Crossrefs

Cf. A068809, A068949.

Extensions

a(43)-a(80) from Giovanni Resta, Jun 27 2018