

A285040


Numbers n such that threehalves of n equals the reverse of n.


1



4356, 43956, 439956, 4399956, 43564356, 43999956, 435604356, 439999956, 4356004356, 4395643956, 4399999956, 43560004356, 43956043956, 43999999956, 435600004356, 435643564356, 439560043956, 439956439956, 439999999956
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OFFSET

1,1


COMMENTS

There are Fibonacci(floor((n2)/2)) terms with n digits (this is essentially A103609).  Ray Chandler, Oct 12 2017


REFERENCES

David Wells, The Penguin Dictionary of Curious and Interesting Numbers (Rev. ed. 1997), p. 158.


LINKS

Ray Chandler, Table of n, a(n) for n = 1..10000


EXAMPLE

439956 times 3/2 equals 659934 which is the reverse of 439956.


MATHEMATICA

Select[2 Range[10^7], 3(#/2) == FromDigits@ Reverse@ IntegerDigits@ # &] (* Giovanni Resta, Apr 08 2017 *)


PROG

(PARI) isok(n) = 3*n/2 == fromdigits(Vecrev(digits(n))); \\ Michel Marcus, Apr 09 2017


CROSSREFS

Cf. A101704, A101705, A101706, A001232, A008918.
Sequence in context: A185796 A250817 A154084 * A203928 A176111 A164517
Adjacent sequences: A285037 A285038 A285039 * A285041 A285042 A285043


KEYWORD

nonn,base


AUTHOR

Harvey P. Dale, Apr 08 2017


EXTENSIONS

Data corrected by Giovanni Resta, Apr 08 2017


STATUS

approved



