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 A030728 Row 2, where, at stage k>1, write i in row 1 and j in row 2, where i is the number of j's in rows 1 and 2, for j=1,2,...,m, where m=max number in row 1 from stages 1 to k-1; stage 1 is 3 in row 1. 1
 3, 1, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 5, 6, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 18, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Sean A. Irvine, Table of n, a(n) for n = 1..1000 CROSSREFS Sequence in context: A272880 A003636 A078929 * A237712 A227920 A138291 Adjacent sequences:  A030725 A030726 A030727 * A030729 A030730 A030731 KEYWORD nonn AUTHOR STATUS approved

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Last modified April 14 12:11 EDT 2021. Contains 342949 sequences. (Running on oeis4.)