A003399Sum of 10 positive 9th powers.

10, 521, 1032, 1543, 2054, 2565, 3076, 3587, 4098, 4609, 5120, 19692, 20203, 20714, 21225, 21736, …

The first term appear at position 49.

…38327950288419716939937510582097494459230781640628…
position 49
termsstringfirst positionoccurrences
110499,997,289
21052146,20810,010
3105211032not within 1,000,000,0000

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