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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
OFFSET
1,2
COMMENTS
Terms calculated by Jeff Heleen.
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
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