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A333428 Starts of runs of 3 consecutive primorial base Niven numbers (A333426). 4
64, 244, 424, 2344, 2524, 4624, 16180, 30064, 30244, 32344, 43900, 60064, 71620, 91408, 99340, 127060, 154780, 182500, 210220, 250936, 338632, 365860, 477280, 510544, 510724, 512824, 513160, 540544, 540880, 790900, 842884, 876988, 1021024, 1021648, 1024000, 1051720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..1000

EXAMPLE

64 is a term since 64, 65 and 66 are all primorial base Niven numbers.

MATHEMATICA

max = 7; bases = Prime @ Range[max, 1, -1]; nmax = Times @@ bases - 1; primNivenQ[n_] := Divisible[n, Plus @@ IntegerDigits[n, MixedRadix[bases]]]; q1 = primNivenQ[1]; q2 = primNivenQ[2]; seq = {}; Do[q3 = primNivenQ[n]; If[q1 && q2 && q3, AppendTo[seq, n - 2]]; q1 = q2; q2 = q3, {n, 3, nmax}]; seq

CROSSREFS

Cf. A154701, A328206, A328210, A328214, A330932, A333426, A333427.

Sequence in context: A349109 A223332 A340696 * A197605 A198071 A218902

Adjacent sequences:  A333425 A333426 A333427 * A333429 A333430 A333431

KEYWORD

nonn

AUTHOR

Amiram Eldar, Mar 20 2020

STATUS

approved

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Last modified November 30 19:02 EST 2021. Contains 349424 sequences. (Running on oeis4.)