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 A135461 a(n) = 1 if n is the norm of an Eisenstein prime (see A055664) otherwise 0. 4
 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES L. W. Reid, The Elements of the Theory of Algebraic Numbers, MacMillan, NY, 1910, see Chap. VI. LINKS Antti Karttunen, Table of n, a(n) for n = 0..65537 EXAMPLE The smallest primes are 1-omega (of norm 3) and 2 (of norm 4). PROG (PARI) A135461(n) = (isprime(n) && n%3<2) || (issquare(n, &n) && isprime(n) && n%3==2); \\ This is Charles R Greathouse IV's Apr 30 2013 code (with name "is") for A055664. - Antti Karttunen, Dec 06 2017 CROSSREFS Cf. A055667, A135462. Characteristic function of A055664. Sequence in context: A179827 A285133 A011658 * A327219 A274950 A093383 Adjacent sequences:  A135458 A135459 A135460 * A135462 A135463 A135464 KEYWORD nonn AUTHOR N. J. A. Sloane, Feb 06 2008 STATUS approved

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Last modified August 16 07:50 EDT 2022. Contains 356160 sequences. (Running on oeis4.)