A074196 Sum of palindromes from the smallest prime factor of n to the largest prime factor of n.

0, 2, 3, 2, 5, 5, 7, 2, 3, 14, 11, 5, 0, 27, 12, 2, 0, 5, 0, 14, 25, 55, 0, 5, 5, 55, 3, 27, 0, 14, 0, 2, 53, 55, 18, 5, 0, 55, 53, 14, 0, 27, 0, 55, 12, 77, 0, 5, 7, 14, 53, 55, 0, 5, 46, 27, 53, 77, 0, 14, 0, 77, 25, 2, 46, 55, 0, 55, 75, 27, 0, 5, 0, 110, 12, 55, 35, 55, 0, 14, 3, 110, 0

Offset

1,2

Links

Table of n, a(n) for n=1..83.

Example

a(203)=57 because 203=7*29 and sum of palindromes between 7 and 29 is: 7+8+9+11+22 = 57.

Crossrefs

Sequence in context: A123528 A074036 A074251 * A153023 A068319 A133775

Adjacent sequences: A074193 A074194 A074195 * A074197 A074198 A074199

Keyword

base,easy,nonn

Author

Jason Earls, Sep 19 2002

Status

approved