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 A003608 Add 4, then reverse digits. (Formerly M3339) 5
 0, 4, 8, 21, 52, 65, 96, 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, 101, 501, 505 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 REFERENCES J. Roberts, Lure of the Integers, Math. Assoc. America, 1992, p. 15. N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). LINKS Nick Hobson, Python program for this sequence FORMULA Has period 54. MAPLE rev:=proc(n) local nn, nnn: nn:=convert(n, base, 10): add(nn[nops(nn)+1-j]*10^(j-1), j=1..nops(nn)) end: a[0]:=0: for n from 1 to 70 do a[n]:=rev(a[n-1]+4) od: seq(a[n], n=0..70); # Emeric Deutsch, Mar 07 2007 MATHEMATICA NestList[FromDigits[Reverse[IntegerDigits[#+4]]]&, 0, 70] (* Harvey P. Dale, Jan 20 2014 *) CROSSREFS All of A003608, A016081, A016082 (and possibly others) eventually reach the trajectory of 1 shown in A119031. Cf. A055198. Sequence in context: A261031 A077921 A097076 * A248423 A319565 A129794 Adjacent sequences:  A003605 A003606 A003607 * A003609 A003610 A003611 KEYWORD nonn,base AUTHOR EXTENSIONS Corrected by Nick Hobson, Feb 21 2007 More terms from Emeric Deutsch, Mar 07 2007 STATUS approved

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Last modified August 13 05:41 EDT 2020. Contains 336442 sequences. (Running on oeis4.)