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%I #34 Sep 20 2020 01:32:17
%S 1,4,27,72,800,3125,6272,21600,30375,169344,247808,750141,823543,
%T 1384448,6690816,19600000,37380096,37879808,189267968,190512000,
%U 235782657,774400000,1022754816,1313046875,2344190625,3502727631,4326400000,4437573632,5110235136,118374400000
%N Numbers k of the form p_1^p_m * p_2^p_(m-1) * ... * p_(m-1)^p_2 * p_m^p_1 for increasing primes p_i.
%C More common than prime(n)^prime(n) (i.e., A051674).
%H Shaun Alan Isherwood, <a href="https://math.stackexchange.com/q/3799838/104041">Name for numbers of the form pj1^pjn*pj2^pjn-1...pjn-1^pj2*pjn^pj1</a>, Math StackExchange question.
%H M.S.E. user Peter, <a href="https://chat.stackexchange.com/transcript/message/55327822#55327822">Math StackExchange discussion about the above</a>
%e 1 is the product of zero primes, 4=2^2, 27=3^3, 72=2^3*3^2, 800=2^5*5^2.
%Y Cf. A000312, A051674.
%K nonn
%O 1,2
%A _Shaun Alan Isherwood_, Sep 10 2020
%E Missing terms 19600000 and 2344190625 added, more terms from and offset changed to 1 by _Jinyuan Wang_, Sep 12 2020