A001239Numbers that are the sum of 3 nonnegative cubes in more than 1 way.

216, 251, 344, 729, 855, 1009, 1072, 1366, 1457, 1459, 1520, 1674, 1728, 1729, 1730, 1737, …

The first term appear at position 991.

…806613001927876611195909216420198938095257201065485…
position 991
termsstringfirst positionoccurrences
1216991999,745
22162511,868,524941
3216251344not within 1,000,000,0000
4216251344729not within 1,000,000,0000

Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.