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A086353 Fixed point if nonzero-digit product of n! is iterated. 7
1, 2, 6, 8, 2, 4, 2, 8, 8, 8, 6, 1, 2, 8, 8, 8, 8, 6, 8, 8, 8, 8, 8, 2, 2, 8, 4, 8, 6, 2, 2, 6, 1, 8, 8, 8, 2, 2, 6, 8, 8, 8, 8, 8, 8, 6, 8, 6, 8, 8, 8, 6, 6, 1, 8, 8, 5, 8, 6, 6, 8, 6, 8, 2, 8, 8, 8, 6, 8, 2, 8, 8, 2, 6, 6, 8, 9, 6, 8, 8, 6, 2, 2, 8, 8, 8, 8, 4, 6, 8, 9, 6, 2, 2, 8, 2, 8, 8, 4, 4, 8, 8, 6, 2, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..105.

FORMULA

a(n)=A051802[n! ]=fixed-point of A051801[n! ]

EXAMPLE

n=10, 10!=362880, iteration list={3628800,2304,24,8},a(10)=8.

MATHEMATICA

prd[x_] := Apply[Times, DeleteCases[IntegerDigits[x], 0]] Table[FixedPoint[prd, w! ], {w, 1, 128}]

CROSSREFS

Cf. A051801, A051802, A086354-A086361, A029898, A010888.

Sequence in context: A261875 A084686 A040164 * A019786 A278497 A067067

Adjacent sequences:  A086350 A086351 A086352 * A086354 A086355 A086356

KEYWORD

base,nonn

AUTHOR

Labos Elemer, Jul 21 2003

STATUS

approved

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Last modified October 4 09:28 EDT 2022. Contains 357239 sequences. (Running on oeis4.)