A328214 Starts of runs of 3 consecutive lazy-Fibonacci-Niven numbers (A328212).
27312, 37504, 48060, 83248, 198254, 269856, 319694, 386136, 423520, 434300, 518175, 525672, 539800, 572184, 690858, 701118, 793799, 886534, 998866, 1015035, 1258444, 1396582, 1409058, 1511600, 1557422, 1680378, 1729398, 1753818, 2044768, 2136263, 2310624, 2396438, 2421024
Offset: 1
Keywords
Examples
27312 is in the sequence since 27312, 27313 and 27314 are in A328212: A112310(27312) = 16 is a divisor of 27312, A112310(27312) = 13 is a divisor of 27313, and A112310(27314) = 14 is a divisor of 27314.
Links
- Amiram Eldar, Table of n, a(n) for n = 1..79
- Helen G. Grundman, Consecutive Zeckendorf-Niven and lazy-Fibonacci-Niven numbers, Fibonacci Quarterly, Vol. 45, No. 3 (2007), pp. 272-276.
Programs
-
Mathematica
ooQ[n_] := Module[{k = n}, While[k > 3, If[Divisible[k, 4], Return[True], k = Quotient[k, 2]]]; False]; c = 0; cn = 0; k = 1; s = {}; v = Table[-1, {3}]; While[cn < 33, If[! ooQ[k], c++; d = Total@IntegerDigits[k, 2]; If[Divisible[c, d], v = Join[Rest[v], {c}]; If[AllTrue[Differences[v], # == 1 &], cn++; AppendTo[s, c - 2]]]]; k++]; s