The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A193343 a(1) = 42; a(n) = 10*(sum of digits of a(n-1)) + (last digit of a(n-1)) + 1 for n >= 2. 0
 42, 63, 94, 135, 96, 157, 138, 129, 130, 41, 52, 73, 104, 55, 106, 77, 148, 139, 140, 51, 62, 83, 114, 65, 116, 87, 158, 149, 150, 61, 72, 93, 124, 75, 126, 97, 168, 159, 160, 71, 82, 103, 44, 85, 136, 107, 88, 169, 170, 81, 92, 113, 54, 95, 146, 117, 98, 179, 180, 91, 102, 33, 64, 105, 66, 127, 108, 99, 190, 101, 22, 43, 74, 115, 76, 137, 118, 109, 110, 21, 32, 53, 84, 125, 86, 147, 128, 119, 120, 31, 42, 63 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The sequence is periodic: a(91) = a(1). - Georg Fischer, Jan 15 2021 REFERENCES Clifford A. Pickover, A Passion for Mathematics, John Wiley & Sons, Inc., 2005, pp. 103 and 311 (for "Trains with crystal balls"). LINKS Table of n, a(n) for n=1..92. Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1). MATHEMATICA nxt[n_]:=Module[{idn=IntegerDigits[n]}, 10Total[idn]+Last[idn]+1]; NestList[nxt, 42, 120] (* Harvey P. Dale, Jul 23 2011 *) CROSSREFS Cf. A007953, A010879. Sequence in context: A363730 A248441 A119650 * A118074 A350641 A115957 Adjacent sequences: A193340 A193341 A193342 * A193344 A193345 A193346 KEYWORD nonn,base,easy AUTHOR Harvey P. Dale, Jul 23 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 7 23:30 EST 2023. Contains 367662 sequences. (Running on oeis4.)