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A249599 Analog of A097717 in base 5. 6
1, 16, 3348, 411184, 5, 1262796336, 31415153952, 128, 639, 46402790906782052954848931760, 9548, 37884308119951668432, 507, 483747841655344, 2949712546290578068913640, 368402917173844349535205696, 3162, 1149642179207353109724066230688 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..369

EXAMPLE

a(2)=16, because in base 5, 16 is written 31 and 16/2 is 8 and written 13.

MAPLE

A249599 := proc(n)

    local m, b, mbas, msf ;

    b := 5;

    for m from 1 to 1999999 do

        mbas := convert(m, base, b) ;

        msf := [op(-1, mbas), op(1..nops(mbas)-1, mbas)] ;

        msf := add(op(i, msf)*b^(i-1), i=1..nops(msf)) ;

        if m/n = msf then

            return m;

        end if;

    end do:

    -1 ;

end proc:

for n from 1 do

    print(n, A249599(n)) ;

end do: # R. J. Mathar, Nov 11 2014

CROSSREFS

Cf. A094676, A249596, A249597, A249598.

Sequence in context: A307930 A289703 A266824 * A281821 A003773 A217021

Adjacent sequences:  A249596 A249597 A249598 * A249600 A249601 A249602

KEYWORD

nonn,base

AUTHOR

R. J. Mathar, Mar 30 2009

EXTENSIONS

a(6)-a(18) from Lars Blomberg, Feb 05 2015

STATUS

approved

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Last modified December 7 00:16 EST 2019. Contains 329812 sequences. (Running on oeis4.)