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 A102134 Iccanobirt prime indices (4 of 15): Indices of prime numbers in A102114. 1
 4, 6, 7, 22, 32, 48, 58, 61, 80, 85, 119, 136, 150, 184, 420, 591, 878, 2447, 30938 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS No more terms through 5000. No more terms through 7500. From Harvey P. Dale, May 30 2012 a(20) > 50000. - Robert Price, Nov 08 2018 LINKS Table of n, a(n) for n=1..19. FORMULA A102114(a(n)) = A102154(n). MATHEMATICA nxt[{a_, b_, c_}]:={b, c, FromDigits[Reverse[IntegerDigits[c]]]+b+a}; Flatten[ Position[Transpose[NestList[nxt, {0, 0, 1}, 2500]][[1]], _?PrimeQ]-1] (* Harvey P. Dale, May 30 2012 *) CROSSREFS Cf. A000040, A102114, A102131-A102145. Sequence in context: A102137 A102135 A019251 * A102133 A192121 A012760 Adjacent sequences: A102131 A102132 A102133 * A102135 A102136 A102137 KEYWORD nonn,more,base AUTHOR Jonathan Vos Post and Ray Chandler, Dec 31 2004 EXTENSIONS a(19) from Robert Price, Nov 08 2018 STATUS approved

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Last modified December 4 18:21 EST 2023. Contains 367563 sequences. (Running on oeis4.)