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A103124 1/5-Smith numbers. 1
399996663, 666609999, 669969663, 690696969, 699966663, 2789929969, 3066999963, 3366339999, 3366999933, 3399696663, 3399996633, 3666699663, 3669933993, 3933969693, 6066690999, 6069996663, 6099996633, 6393996933, 6399636963, 6666009999, 6669669633, 6966939633 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

McDaniel, W. L., "The Existence of infinitely Many k- Smith numbers", Fibonacci Quarterly, 25(1987), pp. 76-80.

LINKS

Table of n, a(n) for n=1..22.

S. S. Gupta, Smith Numbers.

EXAMPLE

399996663 is a 5^(-1) Smith number because the digit sum of 399996663, i.e., S(399996663) = 3 + 9 + 9 + 9 + 9 + 6 + 6 + 6 + 3 = 60, which is equal to 5 times the sum of the digits of its prime factors, i.e., 5*Sp(399996663) = 5*Sp(3*11*101*120011) = 5*(3 + 1 + 1 + 1 + 0 + 1 + 1 + 2 + 0 + 0 + 1 + 1) = 60.

CROSSREFS

Cf. A006753.

Sequence in context: A103773 A172602 A108212 * A259224 A038132 A101770

Adjacent sequences:  A103121 A103122 A103123 * A103125 A103126 A103127

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Mar 16 2005

EXTENSIONS

a(6)-a(22) from Donovan Johnson, Sep 20 2011

STATUS

approved

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Last modified August 17 03:46 EDT 2017. Contains 290631 sequences.