Fletcher 32-bit checksum test vectors

Question

I've got some C# code (but the language is irrelevant) that generates a 32-bit Fletcher checksum on an array of 16-bit words. My issue is that I've implemented an optimized algorithm, and after an hour or more of searching the web, I can only find test vectors "abcde", "abcdef", and "abcdefgh" on wikipedia.

I'm hoping that someone has some vectors that they can provide to me to help me verify a correct implementation; OR someone can reproduce my test vectors with the following code and get the same answers that I got.

My checksum code seeds the summation values with 0xFFFF before the first summation, so if I need to change the seed value before testing against someone else's vectors, that's fine. Adding a seed value to the constructor is a trivial exercise.

I realize that there may be other applications or web pages that I can use to test as well, but I've not been able to find them.

My vector generation code:

 byte[] d1 = new byte[1878];
 byte[] d2 = new byte[60];
 byte[] d3 = new byte[61];
 byte[] d4 = new byte[900];
 byte[] d5 = new byte[901];

 for( int i = 0; i < d1.Length; ++i )
 {
     d1[i] = (byte)( 13 * i );
 }

 Array.Copy( d1, 0, d2, 0, 60 );
 Array.Copy( d1, 0, d3, 0, 61 );
 Array.Copy( d1, 100, d4, 0, 900 );
 Array.Copy( d1, 100, d5, 0, 901 );

And the checksum calculated on my vectors:

Checksum of array data[0:60]     = 0xE35DC23D
Checksum of array data[0:61]     = 0xA5A7C249
Checksum of array data[100:1000] = 0xBDDF3B63
Checksum of array data[100:1001] = 0xFA0A3C2B
Checksum of array data[]         = 0xCBD2B70C