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A334310 Starts of runs of 3 consecutive base phi Niven numbers (A334308). 15
17171, 20760, 29183, 32772, 51336, 65840, 66608, 67990, 89054, 95563, 103682, 108910, 133990, 136512, 167598, 173640, 190094, 197218, 205478, 207364, 223873, 241934, 247115, 248443, 252014, 258816, 261135, 278783, 285129, 285130, 289392, 325934, 326520, 335178 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
17171 is a term since 17171, 17172 and 17173 are all base phi Niven numbers.
MATHEMATICA
phiDigSum[1] = 1; phiDigSum[n_] := Plus @@ RealDigits[n, GoldenRatio, 2*Ceiling[ Log[GoldenRatio, n] ]][[1]]; phiNivenQ[n_] := Divisible[n, phiDigSum[n]]; q1 = phiNivenQ[1]; q2 = phiNivenQ[2]; seq = {}; Do[q3 = phiNivenQ[n]; If[q1 && q2 && q3, AppendTo[seq, n - 2]]; q1 = q2; q2 = q3, {n, 3, 300000}]; seq
CROSSREFS
Sequence in context: A251207 A233993 A043621 * A293478 A076774 A236447
KEYWORD
nonn,base
AUTHOR
Amiram Eldar, Apr 22 2020
STATUS
approved

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)