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A324940 Numbers of the form x^2+7*y^2+7*z^2. 0
0, 1, 4, 7, 8, 9, 11, 14, 15, 16, 18, 23, 25, 28, 29, 30, 32, 35, 36, 37, 39, 43, 44, 49, 50, 51, 53, 56, 57, 60, 63, 64, 65, 67, 70, 71, 72, 74, 77, 78, 79, 81, 84, 86, 88, 91, 92, 95, 99, 100, 105, 106, 107, 109, 112, 113, 114, 116, 119, 120, 121 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Complement of A306296

LINKS

Table of n, a(n) for n=1..61.

MATHEMATICA

Take[Union[Flatten[Table[a^2 + 7 b^2 + 7 c^2, {a, 0, 20}, {b, 0, 20}, {c, 0, 20}]]], 200]

CROSSREFS

Cf. A306296.

Sequence in context: A262874 A309264 A161986 * A020670 A253472 A255060

Adjacent sequences:  A324937 A324938 A324939 * A324941 A324942 A324943

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Mar 27 2019

STATUS

approved

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Last modified November 23 17:41 EST 2020. Contains 338595 sequences. (Running on oeis4.)