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.
%I A213477 #13 Oct 27 2024 04:16:01
%S A213477 6,10,40,14,62,76,174,278,218,702,762,758,950,858,1782,2290,1596,1462,
%T A213477 1848,2964,2262,4278,3750,4320,5076,4010,4890,8040,7494,5962,7996,
%U A213477 10318,9424,5770,10080,11088,12222,13806,14712,16904,15222,15620,18258,16092
%N A213477 Main diagonal starting k=2 of array A(k,n) = numbers n such that n^k - prime(n) is a prime.
%D A213477 The k=2 row is A064712 Numbers n such that n^2 - prime(n) is prime.
%D A213477 The k=3 row is A212881 Numbers n such that n^3 - prime(n) is prime.
%D A213477 The k=4 row is A212883 Numbers n such that n^4 - prime(n) is prime.
%D A213477 The k=8 row is A213428 Numbers n such that n^8 - prime(n) is prime.
%e A213477 The array begins:
%e A213477 =====================================================
%e A213477 ....|.n=1.|.n=2.|.n=3.|.n=4.|.n=5.|.n=6.|.n=7.|.n=8.|
%e A213477 =====================================================
%e A213477 k=2.|...6.|..10.|..12.|..18.|..24.|..28.|..30.|..40.|A064712
%e A213477 k=3.|...2.|..10.|..38.|..42.|..44.|..50.|..66.|..74.|A212881
%e A213477 k=4.|...2.|...6.|..40.|..76.|.144.|.146.|.148.|.166.|A212883
%e A213477 =====================================================
%t A213477 Table[Select[Range[100000], PrimeQ[#^n - Prime[#]] &, n-1][[n-1]], {n, 2, 50}] (* _T. D. Noe_, Jun 13 2012 *)
%Y A213477 Cf. A064712, A212881, A212883.
%K A213477 nonn
%O A213477 1,1
%A A213477 _Jonathan Vos Post_, Jun 12 2012