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 A061584 a(1) = 1, a(n)= number obtained by replacing each digit of a(n-1) with six times its value. 5
 1, 6, 36, 1836, 6481836, 3624486481836, 1836122424483624486481836, 64818366121224122424481836122424483624486481836, 362448648183636612612122461212241224244864818366121224122424481836122424483624486481836 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) contains all of a(n-1) as its least significant digits. LINKS John Cerkan, Table of n, a(n) for n = 1..13 MATHEMATICA NestList[FromDigits[Flatten[IntegerDigits/@(6 IntegerDigits[#])]]&, 1, 10] (* Harvey P. Dale, Aug 26 2022 *) PROG (Python) def A061584_first(n): an = "1" a061584 = [] while n > 1: a061584.append(int(an)) newan = "" for i in an: newan += str(6*int(i)) an = newan n -= 1 a061584.append(int(an)) return a061584 # John Cerkan, May 25 2018 CROSSREFS Cf. A061581, A061582, A061583, A061585, A061586, A061587, A061533. Sequence in context: A351796 A069031 A061234 * A197191 A208655 A202781 Adjacent sequences: A061581 A061582 A061583 * A061585 A061586 A061587 KEYWORD nonn,base,easy AUTHOR Amarnath Murthy, May 13 2001 EXTENSIONS More terms from Larry Reeves (larryr(AT)acm.org) and Asher Auel, May 15 2001 STATUS approved

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Last modified May 27 12:27 EDT 2024. Contains 372858 sequences. (Running on oeis4.)