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 A074861 Iccanobirt sequence: a(n)=R[a(n-1)]+R[a(n-2)]+R[a(n-3)] where a(0)=a(1)=a(2)=1 and R(n) (A004086) is the reverse of n. 1
 1, 1, 1, 3, 5, 9, 17, 85, 138, 960, 958, 1759, 10499, 109831, 247873, 617044, 958359, 1773317, 8528346, 14525888, 102424570, 170715000, 164793813, 394338733, 656748025, 1177078610, 1027388860, 1378392568, 9510483643, 12805616091 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA nxt[{a_, b_, c_}]:={b, c, FromDigits[Reverse[IntegerDigits[a]]] + FromDigits[ Reverse[IntegerDigits[b]]] + FromDigits[ Reverse[ IntegerDigits[c]]]}; Transpose[NestList[nxt, {1, 1, 1}, 30]][[1]] (* Harvey P. Dale, Nov 13 2012 *) CROSSREFS Cf. A000213. Sequence in context: A135729 A118330 A062221 * A120941 A108227 A028411 Adjacent sequences:  A074858 A074859 A074860 * A074862 A074863 A074864 KEYWORD easy,base,nonn,changed AUTHOR Felice Russo, Sep 11 2002 EXTENSIONS More terms from David Garber (garber(AT)math.huji.ac.il), Oct 23 2002 STATUS approved

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