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A334373 Starts of runs of 5 consecutive Moran numbers (A001101). 1

%I #9 Apr 27 2020 11:27:44

%S 25502420,5301223225,13242121221,32005512020,74761736450,213415171233,

%T 221221400424,232212103220,243857053493,685392911334,732258727252,

%U 889011113804,905191111482,1013460525033,1080719141080,1229198438214,1461057000513,1961972092132,2157993351414

%N Starts of runs of 5 consecutive Moran numbers (A001101).

%H Giovanni Resta, <a href="/A334373/b334373.txt">Table of n, a(n) for n = 1..230</a> (terms < 10^14)

%e 25502420 is a term since 25502420, 25502421, 25502422, 25502423 and 25502424 are all Moran numbers.

%t moranQ[n_] := PrimeQ[n / Plus @@ IntegerDigits[n]]; m = moranQ /@ Range[5]; seq = {}; Do[If[And @@ m, AppendTo[seq, k - 5]]; m = Join[Rest[m], {moranQ[k]}], {k, 6, 10^8}]; seq

%Y Subsequence of A001101, A085775, A330928, A334371 and A334372.

%Y Cf. A235397.

%K nonn,base

%O 1,1

%A _Amiram Eldar_, Apr 25 2020

%E Terms a(6) and beyond from _Giovanni Resta_, Apr 27 2020

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Last modified June 5 01:34 EDT 2024. Contains 373102 sequences. (Running on oeis4.)