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 A014258 Iccanobif numbers: add previous two terms and reverse the sum. 32
 0, 1, 1, 2, 3, 5, 8, 31, 93, 421, 415, 638, 3501, 9314, 51821, 53116, 739401, 715297, 8964541, 8389769, 1345371, 415379, 570671, 50689, 63126, 518311, 734185, 6942521, 6076767, 88291031, 89776349, 83760871, 22735371, 242694601, 279924562, 361916225, 787048146 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS N. J. A. Sloane and Alois P. Heinz, Table of n, a(n) for n = 0..1000 (first 200 terms from N. J. A. Sloane) N. J. A. Sloane, Transforms MAPLE with(transforms); f:=proc(n) option remember; if n <= 1 then n else digrev(f(n-1)+f(n-2)); fi; end; [seq(f(n), n=0..50)]; MATHEMATICA Clear[ BiF ]; BiF[ 0 ]=0; BiF[ 1 ]=1; BiF[ n_Integer ] := BiF[ n ]=Plus@@(IntegerDigits[ BiF[ n-2 ]+BiF[ n-1 ], 10 ]//(#*Array[ 10^#&, Length[ # ], 0 ])&); Array[ BiF, 40, 0 ] nxt[{a_, b_}]:={b, FromDigits[Reverse[IntegerDigits[a+b]]]}; Transpose[ NestList[ nxt, {0, 1}, 40]][[1]] (* Harvey P. Dale, Jun 15 2013 *) PROG (Python) from itertools import islice def A014258_gen(): # generator of terms     a, b = 0, 1     yield 0     while True:         yield b         a, b = b, int(str(a+b)[::-1]) A014358_list = list(islice(A014258_gen(), 20)) # Chai Wah Wu, Jan 15 2022 CROSSREFS Cf. A000045, A001129, A014259, A014260. Sequence in context: A004091 A072210 A273003 * A237575 A275524 A177195 Adjacent sequences:  A014255 A014256 A014257 * A014259 A014260 A014261 KEYWORD nonn,base,easy AUTHOR STATUS approved

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Last modified August 9 21:08 EDT 2022. Contains 356026 sequences. (Running on oeis4.)