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 A304647 Smallest term of A304636 that requires exactly n iterations to reach a fixed point under the x -> A181819(x) map. 3
 5, 8, 30, 360, 1801800, 2746644314348614680000, 13268350773236509446586539974366689358164301703214270074935844483572035447570761114173070859428708074413696096366645684575600000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS The first entry 5 is optional so has offset 0. LINKS Table of n, a(n) for n=0..6. EXAMPLE The list of multisets with Heinz numbers in the sequence is the following. The number of k's in row n + 1 is equal to the k-th largest term of row n. 5: {3} 8: {1,1,1} 30: {1,2,3} 360: {1,1,1,2,2,3} 1801800: {1,1,1,2,2,3,3,4,5,6} 2746644314348614680000: {1,1,1,1,1,1,2,2,2,2,2,3,3,3,3,4,4,4,5,5,5,6,6,7,7,8,9,10} MATHEMATICA Function[m, Times@@Prime/@m]/@NestList[Join@@Table[Table[i, {Reverse[#][[i]]}], {i, Length[#]}]&, {3}, 6] CROSSREFS Cf. A001221, A001222, A001462, A012257, A014612, A033992, A071625, A112798, A181819, A182850, A182857, A275870, A304464, A304465, A304634, A304636. Sequence in context: A228472 A361578 A049373 * A002536 A068981 A099631 Adjacent sequences: A304644 A304645 A304646 * A304648 A304649 A304650 KEYWORD nonn AUTHOR Gus Wiseman, May 15 2018 STATUS approved

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Last modified May 18 11:53 EDT 2024. Contains 372630 sequences. (Running on oeis4.)