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%I #42 Dec 30 2022 06:30:19
%S 1,116,11681,11681256,11681256625,116812566251296,1168125662512962401,
%T 11681256625129624014096,116812566251296240140966561,
%U 11681256625129624014096656110000,1168125662512962401409665611000014641,116812566251296240140966561100001464120736
%N Concatenation of the first n positive 4th powers.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ConsecutiveNumberSequences.html">Consecutive Number Sequences</a>
%o (PARI) a(n) = my(s=""); for (k=1, n, s = concat(s, Str(k^4))); eval(s); \\ _Michel Marcus_, Dec 30 2022
%Y Cf. A007908, A019521, A019522, A359403.
%K base,nonn,easy
%O 1,2
%A _XU Pingya_, Mar 25 2017
%E a(8) corrected by _Georg Fischer_, Dec 30 2022
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