A183106 Numbers n such that sum of palindromic divisors of n (A088000(n)) is palindromic.

1, 2, 3, 4, 5, 7, 10, 13, 15, 17, 19, 21, 23, 25, 26, 29, 31, 34, 37, 38, 39, 41, 43, 46, 47, 49, 50, 51, 52, 53, 56, 57, 58, 59, 61, 62, 65, 67, 68, 69, 71, 72, 73, 74, 75, 76, 79, 82, 83, 85, 86

Offset

1,2

Links

Table of n, a(n) for n=1..51.

Formula

A000005(a(n)) = A183107(n)

Example

a(12) = 21; palindromic divisors of 21: 1, 3, 7; their sum is 11 (palindromic number).

Maple

isA183106 := proc(n)
    isA002113(A088000(n)) ;
end proc:
for n from 1 to 100 do
    if isA183106(n) then
        printf("%d, ", n) ;
    end if;
end do: # R. J. Mathar, Sep 09 2015

Crossrefs

Sequence in context: A117536 A104665 A094018 * A296610 A071682 A014670

Adjacent sequences: A183103 A183104 A183105 * A183107 A183108 A183109

Keyword

nonn,base

Author

Jaroslav Krizek, Dec 25 2010

Status

approved