A052093 - OEIS

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A052093

a(n)^4 is the smallest fourth power whose decimal expansion digits occur with same frequency n.

4

0, 207, 130398, 5694207, 426424828, 18304641024, 1002719491659

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Terms calculated by Jeff Heleen.

LINKS

Table of n, a(n) for n=1..7.

Patrick De Geest, Numbers whose digits occur with same frequency

EXAMPLE

207^4 = 1836036801 and digits 0,1,3,6 and 8 each occur twice.

PROG

(Python)

g = agen(POW=4) # agen() in A054212

print([next(g) for n in range(1, 5)]) # Michael S. Branicky, Dec 17 2020

CROSSREFS

Cf. A052094, A052069, A052071.

Sequence in context: A204868 A223650 A232346 * A103477 A080531 A123136

Adjacent sequences: A052090 A052091 A052092 * A052094 A052095 A052096

KEYWORD

nonn,base,hard,more

AUTHOR

Patrick De Geest, Jan 15 2000

EXTENSIONS

Offset corrected by Michel Marcus, Aug 12 2015

a(6) corrected and a(7) from Michael S. Branicky, Dec 17 2020

STATUS

approved