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A134595 a(n) is the smallest number such that, for any m, the number formed from the first m digits of a(n) is congruent to n mod m; but no digit can be appended to maintain the condition. 2

%I #3 Oct 19 2017 03:15:07

%S 1080548820,1121114531,1010249842,1115859543,1064928464,1105018975,

%T 1026605496,1303211957,1012880068,1113933789,1002529000,1139156391,

%U 1080784472,1121350183,1010485494,1111055105,1000603246,1101719337

%N a(n) is the smallest number such that, for any m, the number formed from the first m digits of a(n) is congruent to n mod m; but no digit can be appended to maintain the condition.

%C Obviously, each such number has at least ten digits. Smaller numbers (like 1020005640 for 0 mod m) can be extended (to 10200056405).

%e a(1) = 1121114531 because 11 == 1 mod 2, 112 == 1 mod 3, 1211 == 1 mod 4, ..., 1121114531 == 1 mod 10 but there is no digit such that 1121114531d == 1 mod 11. (10 is not a digit.)

%Y Cf. A051883, A132185, A132187.

%K nonn,base,easy

%O 0,1

%A Philippe LALLOUET (philip.lallouet(AT)orange.fr), Nov 04 2007

%E Edited by _Don Reble_, Nov 07 2007

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Last modified August 19 03:19 EDT 2024. Contains 375284 sequences. (Running on oeis4.)