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A340663
a(n)^2 is the start of the first occurrence of n consecutive perfect powers, all of which are squares with exponents equal to 2 (A111245).
4
2, 6, 12, 19, 37, 65, 104, 133, 173, 263, 375, 408, 561, 689, 854, 1107, 1348, 1534, 1819, 2062, 2415, 2871, 3308, 3695, 4241, 4837, 5353, 5995, 6576, 7291, 8211, 8979, 9866, 10880, 11995, 12934, 14113, 15326, 16572, 17889, 19159, 20663, 22289, 23869, 25750, 27361
OFFSET
1,1
FORMULA
a(n) = sqrt(A340661(n)).
EXAMPLE
See A340661.
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Jan 18 2021
STATUS
approved