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A306970 Numbers of the form 8*k+3 not represented by 2*x^2+4*y^2+4*y*z+9*z^2. 0
3, 43, 163, 907 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

There may be no further terms.

LINKS

Table of n, a(n) for n=1..4.

Irving Kaplansky, The first nontrivial genus of positive definite ternary forms, Mathematics of Computation, Vol. 64 (1995): 341-345.

CROSSREFS

Cf. A017101 (numbers of the form 8*k+3).

Sequence in context: A042661 A281503 A030990 * A054698 A229695 A060559

Adjacent sequences:  A306967 A306968 A306969 * A306971 A306972 A306973

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Mar 26 2019

STATUS

approved

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Last modified December 9 13:50 EST 2019. Contains 329877 sequences. (Running on oeis4.)