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A055036 Min[x] composite zero site for Sigma[x+6^n]-Sigma[x]-6^n. 0
104, 125, 195, 415, 2743, 2935, 3535, 19735, 22645, 108703, 977353, 1921033, 2523433, 2425175, 4227575, 85969345, 32606935, 224917033, 1362833713, 716210677, 1557843865, 6226853857, 20369543065 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..23.

FORMULA

a(n)=Min[x] solution for A000203[x+A000400(n)]=A000203(x)+A000400(n) Diophantine equation.

EXAMPLE

n = 6: d = 6^6 = 46656, a(n) = a(6) = 2935 because Sigma[2935]+46656] = 1+5+587+2935+46656 = Sigma[2935+46656] = Sigma[49591] = 1+101+491+49591 = 50184

MATHEMATICA

L = {}; Do[i = 1; While[ ! ((Plus @@ Divisors[i + 6^j] == 6^j + Plus @@ Divisors[i]) && ! PrimeQ[i]), i++ ]; L = Append[L, i], {j, 1, 11}]; L (from Vit Planocka)

CROSSREFS

Subsequence of A054904.

Cf. A054902-A054905, A054799, A054982-A054985, A054987, A055009, A015913-A015518.

Sequence in context: A126817 A095641 A306291 * A274357 A052476 A297912

Adjacent sequences:  A055033 A055034 A055035 * A055037 A055038 A055039

KEYWORD

more,nonn

AUTHOR

Labos Elemer, Jun 01 2000

EXTENSIONS

One more term from Vit Planocka (planocka(AT)mistral.cz), Sep 23 2003

a(12)-a(23) from Donovan Johnson, Nov 30 2008

STATUS

approved

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Last modified April 1 14:52 EDT 2020. Contains 333163 sequences. (Running on oeis4.)