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At the n-th iteration the sequence of integers from 1 to n are appended to the sequence a(n) times.

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`%I #11 Feb 09 2022 15:29:34
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`%S 1,1,2,1,2,3,1,2,3,1,2,3,4,1,2,3,4,5,1,2,3,4,5,1,2,3,4,5,6,1,2,3,4,5,
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`%T 6,1,2,3,4,5,6,1,2,3,4,5,6,7,1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8,1,2,3,4,
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`%U 5,6,7,8,9,1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,1,2,3,4,5,6,7,8,9,10,1,2,3,4
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`%N At the n-th iteration the sequence of integers from 1 to n are appended to the sequence a(n) times.
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`%H Rémy Sigrist, <a href="/A128117/b128117.txt">Table of n, a(n) for n = 1..10258</a> (first 371 terms from Reed Kelly)
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`%e a(5) = 2 so 1,2,3,4,5,1,2,3,4,5 is added to the end of the sequence at the fifth iteration.
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`%t cr[n_] := Module[ { A = {1,1,2}, i, j }, For [ i = 3, i <= n, i++, A = Join[ A, Flatten[ Table[ Range[i], {A[[i]]} ]]]; ]; A ]
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`%o (PARI) a = vector(101, n, 1); m=0; for (n=1, 10, for (t=1, a[n], for (k=1, n, print1 (a[m++]=k", ")))) \\ _Rémy Sigrist_, Feb 09 2022
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`%Y Cf. A001462.
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`%K easy,nonn
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`%O 1,3
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`%A _Reed Kelly_, Feb 15 2007
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