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A308248 Squares of automorphic numbers in base 6 (cf.  A237583). 0
0, 1, 9, 16, 81, 784, 6561, 18496, 1478656, 43046721, 281165824, 893352321, 5859137025, 41368305664, 405026597889, 1088266240000, 15965210931201, 36991307874304, 583272781383681, 1318789102698496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..20.

FORMULA

a(n) = A237583(n)^2. - Michel Marcus, May 17 2019

EXAMPLE

784 = 3344_6 and sqrt(3344_6) = 44_6. Hence 784 is in the sequence.

PROG

(Sage) [(n * n) for n in (0..1000000) if (n * n).str(base = 6).endswith(n.str(base = 6))]

CROSSREFS

Cf. A237583.

Sequence in context: A167349 A267763 A340164 * A179307 A014720 A138238

Adjacent sequences:  A308245 A308246 A308247 * A308249 A308250 A308251

KEYWORD

nonn,base

AUTHOR

Jeremias M. Gomes, May 17 2019

STATUS

approved

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Last modified October 17 12:08 EDT 2021. Contains 348048 sequences. (Running on oeis4.)