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A178539 Where records occur in A169819. 2
1, 2, 4, 6, 10, 12, 16, 18, 30, 48, 56, 60, 108, 120, 144, 180, 288, 396, 504, 720, 840, 1008, 1176, 1260, 1440, 1680, 1980, 2520, 3360, 3780, 6720, 7560, 9240, 10080, 11088, 11760, 13608, 15120, 15840, 19800, 22680, 25200, 26460, 27720, 31680 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Next terms corresponding to terms in A178538: 32760,36960,49504,55440,64680,95040,98280,110880,123760,128520, 159840,163800,191520,196560.

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

mx=0; s={}; Do[id=IntegerDigits[n]; FLA=Flatten[Table[Partition[id, k, 1],

{k, Length[id]}], 1]; fd=Union[FromDigits/@FLA];

dv=Length[Union[Flatten[Divisors/@fd]]]; If[dv>mx, mx=dv; AppendTo[s2, {mx, n}]],

{n, 200000}]; A178539 = Last/@s

CROSSREFS

Cf. A169819, A177834, A178538.

Sequence in context: A127965 A117891 A262935 * A072752 A036634 A005942

Adjacent sequences: A178536 A178537 A178538 * A178540 A178541 A178542

KEYWORD

base,nonn

AUTHOR

Zak Seidov, May 29 2010

STATUS

approved

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Last modified December 5 02:30 EST 2022. Contains 358572 sequences. (Running on oeis4.)