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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
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
Sequence in context: A351796 A069031 A061234 * A197191 A208655 A202781
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.)