

A321008


a(1)=1; thereafter a(n) is obtained by applying Eric Angelini's removerepeateddigits map, x>A320486(x), to n*a(n1), stopping when 0 is reached.


3



1, 2, 6, 24, 120, 720, 54, 432, 3, 30, 0
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OFFSET

1,2


REFERENCES

Eric Angelini, Posting to Sequence Fans Mailing List, Oct 24 2018


LINKS

Table of n, a(n) for n=1..11.
N. J. A. Sloane, Coordination Sequences, Planing Numbers, and Other Recent Sequences (II), Experimental Mathematics Seminar, Rutgers University, Jan 31 2019, Part I, Part 2, Slides. (Mentions this sequence)


EXAMPLE

a(6)=720, so for a(7) we compute 7*720 = 5040 which becomes 54 = a(7).


CROSSREFS

Cf. A320485, A320486, A321009.
Sequence in context: A071088 A177533 A122417 * A033644 A212309 A319546
Adjacent sequences: A321005 A321006 A321007 * A321009 A321010 A321011


KEYWORD

nonn,base,fini,full


AUTHOR

N. J. A. Sloane, Nov 03 2018


STATUS

approved



