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A038446 Sums of 4 distinct powers of 10. 18

%I #16 May 18 2023 19:36:06

%S 1111,10111,11011,11101,11110,100111,101011,101101,101110,110011,

%T 110101,110110,111001,111010,111100,1000111,1001011,1001101,1001110,

%U 1010011,1010101,1010110,1011001,1011010,1011100,1100011,1100101,1100110,1101001,1101010,1101100,1110001

%N Sums of 4 distinct powers of 10.

%H Amiram Eldar, <a href="/A038446/b038446.txt">Table of n, a(n) for n = 1..10000</a>

%t Total/@Subsets[10^Range[0,6],{4}]//Union (* _Harvey P. Dale_, Nov 07 2021 *)

%Y Cf. A011557, A157711 (primes subsequence).

%Y Cf. A038444, A038445, A038447, A038448, A038449, A038450, A038451, A038452, A038453, A038454.

%K nonn,easy

%O 1,1

%A _Olivier GĂ©rard_

%E Offset corrected by _Amiram Eldar_, Jul 12 2022

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Last modified April 18 11:12 EDT 2024. Contains 371779 sequences. (Running on oeis4.)