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A214555 Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 5(n)//4//9(n+1)//4(n)//5. 6
495, 549945, 554999445, 555499994445, 555549999944445, 555554999999444445, 555555499999994444445, 555555549999999944444445, 555555554999999999444444445, 555555555499999999994444444445, 555555555549999999999944444444445 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The symbols // denote concatenation of digits in the definition, and d(n) denotes n repetitions of d, n >= 0.

LINKS

Syed Iddi Hasan, Table of n, a(n) for n = 0..165

FORMULA

If d(n) denotes n repetitions of the digit d, then a(n) = 5(n)49(n+1)4(n)5, where n >= 0.

EXAMPLE

549945 is a fixed point of the mapping for n=1.

CROSSREFS

Cf. A214556-A214559.

Sequence in context: A104478 A133352 A140913 * A179170 A157447 A109477

Adjacent sequences:  A214552 A214553 A214554 * A214556 A214557 A214558

KEYWORD

nonn,base

AUTHOR

Syed Iddi Hasan, Jul 20 2012

STATUS

approved

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Last modified May 26 13:05 EDT 2019. Contains 323586 sequences. (Running on oeis4.)