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A133651 Early bird numbers of order 3. 3

%I #5 Mar 30 2012 17:27:54

%S 212,214,215,216,217,218,219,221,231,312,313,321,322,323,325,326,327,

%T 328,329,331,332,342,421,423,424,432,433,434,436,437,438,439,441,442,

%U 443,453,521,532,534,535,543,544,545,547,548,549,551,552,553,554,564

%N Early bird numbers of order 3.

%C N-th Early bird number of order 2 is in the sequence if it occurs in the concatenation of the first n-1 early bird numbers of order 2.

%H Klaus Brockhaus, <a href="/A133651/b133651.txt">Table of n, a(n) for n = 1..1000</a>

%e A133650(13) = 212 occurs in the concatenation 99111122123132142152162172182192211 of A133650(1), ..., A133650(12). Hence 212 is an early bird number of order 3.

%o For JBASIC program see A133651 (order = 3; maxterm = 600).

%Y Cf. A116700 (early bird numbers), A133650 (early bird numbers of order 2), A133652 (least early bird number of order n).

%K nonn,base

%O 1,1

%A _Klaus Brockhaus_, Sep 19 2007

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Last modified March 28 16:12 EDT 2024. Contains 371254 sequences. (Running on oeis4.)