cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A180203 Differences between prime powers of primes, offsetting the prime and the power by only one. (For purposes of this sequence, 0 and 1 are treated as primes; see Formula.)

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%I A180203 #10 Mar 09 2014 23:06:53
%S A180203 1,1,7,116,16682,19470364,1792140906866,9902785872511900,
%T A180203 5480376953206769280002,74609990540732925759722548,
%U A180203 4316720643133944843150107810831502
%N A180203 Differences between prime powers of primes, offsetting the prime and the power by only one. (For purposes of this sequence, 0 and 1 are treated as primes; see Formula.)
%C A180203 Except for the first few terms, first differences of A078422. - _Franklin T. Adams-Watters_, Mar 08 2014
%F A180203 a(n)= {EP(n+2)^EP(n+1)}-{EP(n+1)^EP(n)}, where EP(1) = 0, EP(2) = 1, and EP(n) = Prime(n-2) for n > 2.
%e A180203 n=7 13^11 - 11^7 = 1 792 160 394 037 - 19 487 171 = 1 792 140 906 866.
%Y A180203 Cf. A078422, A088385.
%K A180203 nonn
%O A180203 1,3
%A A180203 Rick Stephens (rickstphns68(AT)hotmail.com), Aug 15 2010
%E A180203 a(8)-a(11) from _Robert G. Wilson v_, Aug 23 2010