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A038449
Sums of 7 distinct powers of 10.
10
1111111, 10111111, 11011111, 11101111, 11110111, 11111011, 11111101, 11111110, 100111111, 101011111, 101101111, 101110111, 101111011, 101111101, 101111110, 110011111, 110101111, 110110111, 110111011, 110111101, 110111110, 111001111, 111010111, 111011011, 111011101
OFFSET
1,1
LINKS
MATHEMATICA
Take[Total/@Subsets[10^Range[0, 20], {7}]//Union, 20] (* Harvey P. Dale, Feb 25 2018 *)
KEYWORD
nonn,easy
EXTENSIONS
Offset corrected by Amiram Eldar, Jul 12 2022
STATUS
approved