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A119031 Add and Reverse: a(n) = the reversal of (a(n-1)+d), case a(1)=1 and d=4. 5
1, 5, 9, 31, 53, 75, 97, 101, 501, 505, 905, 909, 319, 323, 723, 727, 137, 141, 541, 545, 945, 949, 359, 363, 763, 767, 177, 181, 581, 585, 985, 989, 399, 304, 803, 708, 217, 122, 621, 526, 35, 93, 79, 38, 24, 82, 68, 27, 13, 71, 57, 16, 2, 6, 1, 5, 9, 31, 53, 75, 97 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Cycle of length 54. [Corrected by N. J. A. Sloane, Aug 02 2009]
LINKS
MATHEMATICA
Nest[Append[#, IntegerReverse[#[[-1]] + 4]] &, {1}, 60] (* Michael De Vlieger, Mar 14 2021 *)
PROG
(Python)
def A119031(N=60, a=1, d=4): # optional args: # terms, initial value, increment
for _ in range(N): yield a; a=int(str(a+d)[::-1])
list(A119031()) # M. F. Hasler, Mar 15 2022
(PARI) a=6; A119031=vector(60, i, a=fromdigits(Vecrev(digits(a+4)))) \\ M. F. Hasler, Mar 15 2022
CROSSREFS
All of A003608, A016081, A016082 (and possibly others) eventually reach the trajectory of 1 shown in A119031. Cf. A055198.
Cf. A016081 (case a(1)=3).
Sequence in context: A214902 A049602 A350280 * A271129 A271152 A271164
KEYWORD
nonn,base
AUTHOR
Zak Seidov, May 09 2006
STATUS
approved

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Last modified March 28 16:58 EDT 2024. Contains 371254 sequences. (Running on oeis4.)