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A053939 Squares composed of digits {3,4,6}. 2
4, 36, 64, 3364, 4443664, 443433464464, 466363336464, 43346343434436, 46443434463364, 3436643466443664, 33663346434644644, 6344433646663343363344, 444336446434444344644644, 4333643333666334466333636, 4464644636363464333646646666664464, 44444633333463334436443663666646446336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Author?, Source (txt)

Hisanori Mishima, Sporadic tridigital solutions

FORMULA

a(n) = A053938(n)^2.

CROSSREFS

Cf. A053938.

Sequence in context: A280934 A173618 A091722 * A167632 A072157 A075215

Adjacent sequences:  A053936 A053937 A053938 * A053940 A053941 A053942

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Mar 15 2000

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005

a(14)-a(16) from Mishima's website, added by Max Alekseyev, Nov 30 2017

STATUS

approved

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Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)