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A195191
Smallest n-Smith number.
1
32, 402, 2401, 2030, 10112, 10, 200, 10200, 10010, 100200, 1000110, 1000200, 100, 20000, 10200000, 1001000, 100200000, 1000110000, 1000200000, 1000, 2000000, 10200000000, 100100000, 100200000000, 1000110000000, 1000000000100, 10000, 200000000
OFFSET
2,1
COMMENTS
The smallest number for which the sum of the digits of its prime factors equals n multiplied by the sum of its digits.
LINKS
EXAMPLE
The first term of A104390, the first term of A104391, the first term of A103125 etc.
MAPLE
A007953 := proc(n) add(d, d=convert(n, base, 10)) ; end proc:
A118503 := proc(n) a := 0 ; for p in ifactors(n)[2] do a := a+ op(2, p)*A007953(op(1, p)) ; end do: a ; end proc:
A195191 := proc(n) for k from 1 do if A118503(k) = n*A007953(k) then return k; end if; end do: end proc: # R. J. Mathar, Sep 14 2011
CROSSREFS
Sequence in context: A247995 A247996 A068548 * A275232 A061594 A145403
KEYWORD
nonn,base
AUTHOR
Kausthub Gudipati, Sep 11 2011
EXTENSIONS
a(12)-a(29) from Donovan Johnson, Sep 15 2011
STATUS
approved