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A334372 Starts of runs of 4 consecutive Moran numbers (A001101). 3
21481224, 22314620, 25502420, 25502421, 32432425, 130062260, 147026913, 713021425, 922216713, 938710112, 1012101135, 1019292153, 1113068913, 1420791155, 1545743565, 1671500190, 1805406154, 1941702882, 2010317425, 2027025025, 2200277555, 2307662313, 2437253313 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..197 (terms below 10^11)

EXAMPLE

21481224 is a term since 21481224/(2+1+4+8+1+2+2+4) = 895051, 21481225/(2+1+4+8+1+2+2+5) = 859249, 21481226/(2+1+4+8+1+2+2+6) = 826201 and 21481227/(2+1+4+8+1+2+2+7) = 795601 are all primes.

MATHEMATICA

moranQ[n_] := PrimeQ[n / Plus @@ IntegerDigits[n]]; m = moranQ /@ Range[4]; seq = {}; Do[If[And @@ m, AppendTo[seq, k - 4]]; m = Join[Rest[m], {moranQ[k]}], {k, 5, 3 * 10^7}]; seq

CROSSREFS

Subsequence of A001101, A085775, A141769 and A334371.

Cf. A235397.

Sequence in context: A253870 A253877 A253543 * A250912 A251998 A210389

Adjacent sequences:  A334369 A334370 A334371 * A334373 A334374 A334375

KEYWORD

nonn,base

AUTHOR

Amiram Eldar, Apr 25 2020

STATUS

approved

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Last modified September 30 17:27 EDT 2022. Contains 357106 sequences. (Running on oeis4.)