TY - JOUR
T1 - Augmented generalized happy functions
AU - Baker Swart, B.
AU - Beck, K. A.
AU - Crook, S.
AU - Eubanks-Turner, C.
AU - Grundman, H. G.
AU - Mei, M.
AU - Zack, L.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - An augmented generalized happy function, S[c,b] maps a positive integer to the sum of the squares of its base b digits and a non-negative integer c. A positive integer u is in a cycle of S[c,b] if, for some positive integer k, Sk [c,b](u) = u, and, for positive integers v and w, v is w-attracted for S[c,b] if, for some non-negative integer ℓ, Sℓ [c,b](v) = w. In this paper, we prove that, for each c 0 and b 2, and for any u in a cycle of S[c,b]: (1) if b is even, then there exist arbitrarily long sequences of consecutive u-attracted integers, and (2) if b is odd, then there exist arbitrarily long sequences of 2-consecutive u-attracted integers.
AB - An augmented generalized happy function, S[c,b] maps a positive integer to the sum of the squares of its base b digits and a non-negative integer c. A positive integer u is in a cycle of S[c,b] if, for some positive integer k, Sk [c,b](u) = u, and, for positive integers v and w, v is w-attracted for S[c,b] if, for some non-negative integer ℓ, Sℓ [c,b](v) = w. In this paper, we prove that, for each c 0 and b 2, and for any u in a cycle of S[c,b]: (1) if b is even, then there exist arbitrarily long sequences of consecutive u-attracted integers, and (2) if b is odd, then there exist arbitrarily long sequences of 2-consecutive u-attracted integers.
KW - Happy numbers
KW - Integer functions
KW - Iteration
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U2 - 10.1216/RMJ-2017-47-2-403
DO - 10.1216/RMJ-2017-47-2-403
M3 - Article
SN - 0035-7596
VL - 47
SP - 403
EP - 417
JO - Rocky Mountain Journal of Mathematics
JF - Rocky Mountain Journal of Mathematics
IS - 2
ER -