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A179122 a(1) = 8, a(n) = concatenation of the prime divisors, ordered descending by their size, of a(n - 1) 0
8, 222, 3732, 311322, 89531132, 2238278322, 123077433732, 124155175111322, 26516317994713012, 1712365225813871322, 28539420430231188732, 2378285035852599061322, 14894019245254379840272 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..13.

Markus Tervooren, Factorizations of inverse home prime base 10 8

EXAMPLE

a(1) = 8 = 2 . 2 . 2, so a(2) = 222. 222 = 37 . 3 . 2, so a(3) = 3732.

MATHEMATICA

nxt[n_]:=FromDigits[Flatten[IntegerDigits/@Reverse[Table[#[[1]], {#[[2]]}]&/@ FactorInteger[n]]]]; NestList[nxt, 8, 15] (* Harvey P. Dale, Feb 04 2015 *)

CROSSREFS

Cf. A037274.

Sequence in context: A316954 A299734 A006919 * A300349 A300434 A300768

Adjacent sequences:  A179119 A179120 A179121 * A179123 A179124 A179125

KEYWORD

nonn,base

AUTHOR

Ivan Panchenko, Jun 30 2010

STATUS

approved

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Last modified August 21 04:54 EDT 2019. Contains 326162 sequences. (Running on oeis4.)