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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
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
Sequence in context: A228472 A361578 A049373 * A002536 A068981 A099631
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.)