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%I #40 Nov 29 2016 22:47:42
%S 2,23,733,
%T 302155729822807067683647339069918655121463860225627810920499638685341
%N Primes of the form: Sum_{j=0..k} (k-j)^j.
%e a(1) = 2 = 2^0 + 1^1 + 0^2 (at k=2).
%e a(2) = 23 = 5^0 + 4^1 + 3^2 + 2^3 + 1^4 + 0^5 (at k=5).
%e a(3) = 733 = 8^0 + 7^1 + ... + 1^7 + 0^8 (at k=8).
%e a(4) = 3.021557...*10^68 = 72^0 + 71^1 + ... + 1^71 + 0^72 (at k=72).
%Y Primes in A026898.
%K nonn
%O 1,1
%A _Marc Morgenegg_, Nov 10 2016
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