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 A140834 #8 May 11 2024 15:38:51
%S A140834 2,3,17,19,83,97,113,163,179,257,337,353,419,499,593,641,643,673,769,
%T A140834 787,881,883,1153,1297,1409,1459,1553,1889,2003,2083,2131,2417,2579,
%U A140834 2593,2609,2657,2659,2689,2819,3169,3217,3697,3779,3889,3907,4099,4129,4177
%N A140834 Primes that are the sum of at most four nonzero 4th powers.
%C A140834 This sequence was checked by _T. D. Noe_, who had supplied the b-list for A004833. A037896 is a subset of {Primes that are the sum of at exactly 2 nonzero 4th powers}, itself a subset of A002645 Quartan primes: primes of the form x^4 + y^4, x>0, y>0.
%F A140834 A000040 INTERSECTION A004833. {A133740 = Primes that are the sum of at exactly 4 nonzero 4th powers} UNION {A085318 = Primes that are the sum of at exactly 3 nonzero 4th powers} UNION {A002645 = Primes that are the sum of at exactly 2 nonzero 4th powers}.
%Y A140834 Cf. A000040, A000583, A002645, A003294, A004833, A037896, A085318, A122540, A126657, A133740.
%K A140834 easy,nonn
%O A140834 1,1
%A A140834 _Jonathan Vos Post_, Jul 18 2008
%E A140834 Missing term 353 inserted by _Georg Fischer_, May 11 2024