A055054 - OEIS

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A055054

Numbers of the form 4^i*(8j+7) or 4^i*(3j+1).

1

1, 4, 7, 10, 13, 15, 16, 19, 22, 23, 25, 28, 31, 34, 37, 39, 40, 43, 46, 47, 49, 52, 55, 58, 60, 61, 63, 64, 67, 70, 71, 73, 76, 79, 82, 85, 87, 88, 91, 92, 94, 95, 97, 100, 103, 106, 109, 111, 112, 115, 118, 119, 121, 124, 127, 130, 133, 135, 136

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

The numbers not of the form 2x^2+3y^2+6z^2.

LINKS

Table of n, a(n) for n=1..59.

L. J. Mordell, A new Waring's problem with squares of linear forms, Quart. J. Math., 1 (1930), 276-288 (see p. 283).

CROSSREFS

Sequence in context: A090384 A327422 A260165 * A196415 A186327 A190362

Adjacent sequences: A055051 A055052 A055053 * A055055 A055056 A055057

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 02 2000

STATUS

approved