A052093 - OEIS

%I #14 Dec 17 2020 14:25:48

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

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

%C Terms calculated by _Jeff Heleen_.

%H Patrick De Geest, <a href="http://www.worldofnumbers.com/samedigits.htm">Numbers whose digits occur with same frequency</a>

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

%o (Python)

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

%o print([next(g) for n in range(1, 5)]) # _Michael S. Branicky_, Dec 17 2020

%Y Cf. A052094, A052069, A052071.

%K nonn,base,hard,more

%O 1,2

%A _Patrick De Geest_, Jan 15 2000

%E Offset corrected by _Michel Marcus_, Aug 12 2015

%E a(6) corrected and a(7) from _Michael S. Branicky_, Dec 17 2020