A190217 Numbers all of whose divisors are repdigit numbers.

1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 1111111111111111111, 2222222222222222222, 3333333333333333333, 4444444444444444444, 5555555555555555555, 6666666666666666666, 7777777777777777777, 8888888888888888888, 9999999999999999999

Offset

1,2

Comments

Subset of A010785, A190220 and A190221.

Links

Table of n, a(n) for n=1..27.

Example

Number 99 is in sequence because all divisors of 99 (1, 3, 9, 11, 33, 99) are repdigit numbers.

Crossrefs

Sequence in context: A010785 A343524 A032573 * A222620 A262069 A370052

Adjacent sequences: A190214 A190215 A190216 * A190218 A190219 A190220

Keyword

nonn,base

Author

Jaroslav Krizek, May 06 2011

Status

approved