A334371 -id:A334371 - cp's OEIS frontend

A334372 Starts of runs of 4 consecutive Moran numbers (A001101).

21481224, 22314620, 25502420, 25502421, 32432425, 130062260, 147026913, 713021425, 922216713, 938710112, 1012101135, 1019292153, 1113068913, 1420791155, 1545743565, 1671500190, 1805406154, 1941702882, 2010317425, 2027025025, 2200277555, 2307662313, 2437253313

Offset: 1

Amiram Eldar, Apr 25 2020

			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.

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

Subsequence of A001101, A085775, A141769 and A334371.

Cf. A235397.

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

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

Original entry on oeis.org

25502420, 5301223225, 13242121221, 32005512020, 74761736450, 213415171233, 221221400424, 232212103220, 243857053493, 685392911334, 732258727252, 889011113804, 905191111482, 1013460525033, 1080719141080, 1229198438214, 1461057000513, 1961972092132, 2157993351414

Offset: 1

Amiram Eldar, Apr 25 2020

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

Giovanni Resta, Table of n, a(n) for n = 1..230 (terms < 10^14)

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

Cf. A235397.

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

Terms a(6) and beyond from Giovanni Resta, Apr 27 2020

cp's OEIS Frontend

A334372 Starts of runs of 4 consecutive Moran numbers (A001101).

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