A003294Numbers k such that k^4 can be written as a sum of four positive 4th powers.

353, 651, 706, 1059, 1302, 1412, 1765, 1953, 2118, 2471, 2487, 2501, 2604, 2824, 2829, 3177, …

The first term appear at position 934.

…428755468731159562863882353787593751957781857780532…
position 934
termsstringfirst positionoccurrences
13539341,000,659
23536511,814,8721,041
3353651706not within 1,000,000,0000

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