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A306969
Numbers congruent to 1, 2, or 4 mod 7 that are not represented by x^2+7*y^2+7*z^2.
0
2, 22, 46, 58, 85, 93, 102, 205, 298, 310, 330, 358, 466, 478, 697, 862, 949, 1222, 1402, 1513, 1957, 1978, 2962, 3502, 7165, 10558
OFFSET
1,1
LINKS
Irving Kaplansky, The first nontrivial genus of positive definite ternary forms, Mathematics of Computation, Vol. 64 (1995): 341-345.
CROSSREFS
Cf. A047350 (numbers congruent to {1, 2, 4} mod 7).
Sequence in context: A350318 A080142 A364484 * A200946 A322157 A156454
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 26 2019
STATUS
approved