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 A137418 Limiting sequence when we start with positive integers (A000027) and at step n >= 1 add to the term at position n + digitsum(a(n)) the value digitsum(a(n)). 10
 1, 3, 3, 4, 8, 9, 7, 12, 9, 10, 15, 12, 21, 21, 27, 19, 26, 27, 19, 20, 21, 24, 23, 36, 33, 36, 36, 39, 39, 30, 37, 32, 45, 34, 44, 45, 42, 38, 39, 52, 70, 51, 57, 44, 54, 46, 54, 61, 60, 50, 63, 60, 53, 63, 85, 75, 57, 64, 59, 69, 69, 62, 72, 64, 65, 66, 67, 103, 81, 78, 71, 85 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Michel Marcus, Table of n, a(n) for n = 1..10000 PROG (PARI) lista(nn) = my(va = [1..nn]); for (k=1, nn, my(i = k+sumdigits(va[k])); if (i<= #va, va[i]+=sumdigits(va[k])); ); va; \\ Michel Marcus, Aug 09 2022 CROSSREFS Cf. A000027, A007953. Sequence in context: A147679 A339054 A137417 * A357306 A285445 A327745 Adjacent sequences: A137415 A137416 A137417 * A137419 A137420 A137421 KEYWORD easy,nonn,base AUTHOR Ctibor O. Zizka, Apr 16 2008 EXTENSIONS Extended by Klaus Brockhaus, Apr 23 2008 STATUS approved

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Last modified February 28 07:05 EST 2024. Contains 370387 sequences. (Running on oeis4.)