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 A007398 Add 7, then reverse digits. (Formerly M4422) 1
 0, 7, 41, 84, 19, 62, 96, 301, 803, 18, 52, 95, 201, 802, 908, 519, 625, 236, 342, 943, 59, 66, 37, 44, 15, 22, 92, 99, 601, 806, 318, 523, 35, 24, 13, 2, 9, 61, 86, 39, 64, 17, 42, 94, 101, 801, 808, 518, 525, 235, 242, 942, 949, 659, 666, 376, 383, 93, 1, 8, 51, 85, 29, 63 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS From n = 1 the sequence is periodic with a period of 63. The Data without the initial 0 gives that period. - David A. Corneth, Aug 01 2018 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 Vincenzo Librandi, Table of n, a(n) for n = 0..1000 Nick Hobson, Python program for this sequence N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki. 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(7+a[n-1]) od: seq(a[n], n=0..70); # Emeric Deutsch, Jul 28 2006 MATHEMATICA NestList[FromDigits[Reverse[IntegerDigits[# + 7]]]&, 0, 60] (* Vincenzo Librandi, Aug 08 2017 *) PROG (PARI) first(n) =  my(res = vector(n)); res[1]=0; for(i = 2, n, res[i] = fromdigits(Vecrev(digits(res[i - 1] + 7)))); res \\ David A. Corneth, Aug 01 2018 CROSSREFS Cf. A117828. Sequence in context: A272387 A105902 A031909 * A290204 A138629 A127923 Adjacent sequences:  A007395 A007396 A007397 * A007399 A007400 A007401 KEYWORD nonn,base,easy AUTHOR EXTENSIONS More terms from Emeric Deutsch, Jul 28 2006 STATUS approved

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Last modified April 7 13:36 EDT 2020. Contains 333305 sequences. (Running on oeis4.)