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A270295 Numbers that equal the sum of the squares of the digits of their own square in base 27. 3
0, 1, 9, 81, 488, 507, 827, 1210, 1534, 1912 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

in other bases:

base 16:0, 1, 33, 358

base 17:0, 1, 105, 311

base 18:0, 1

base 19:0, 1, 396

base 20:0, 1, 35

base 21:0, 1, 175, 202

base 22:0, 1, 111

base 23:0, 1, 5, 237, 912

base 24:0, 1, 362, 675, 916

base 25:0, 1, 45, 200, 1072

base 26:0, 1, 1318

LINKS

Table of n, a(n) for n=1..10.

MATHEMATICA

Select[Range[0, 2000], # == Total[IntegerDigits[#^2, 27]^2] &] (* Michael De Vlieger, Mar 15 2016 *)

PROG

(PARI) isok(n, b=27) = my(d = digits(n^2, b)); sum(k=1, #d, d[k]^2) == n; \\ Michel Marcus, Mar 16 2016

CROSSREFS

Cf. A270304, A270340, A270341.

Sequence in context: A167717 A208079 A223719 * A214618 A207009 A196986

Adjacent sequences:  A270292 A270293 A270294 * A270296 A270297 A270298

KEYWORD

nonn,fini,base

AUTHOR

Daniel Mondot, Mar 14 2016

STATUS

approved

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Last modified January 16 15:53 EST 2021. Contains 340206 sequences. (Running on oeis4.)