A183106 - OEIS

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A183106

Numbers k such that sum of palindromic divisors of k (A088000(k)) 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, 87, 89, 91, 92, 93, 94, 95, 97, 103, 106, 107, 109, 112, 113, 115, 116, 118, 119

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..69.

FORMULA

A088000(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)) ;