A211806 Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w^2<=x^2+y^2.

1, 5, 16, 36, 69, 119, 190, 282, 399, 547, 726, 940, 1195, 1493, 1834, 2224, 2669, 3165, 3720, 4338, 5021, 5771, 6596, 7494, 8467, 9521, 10662, 11890, 13207, 14621, 16134, 17742, 19457, 21283, 23214, 25258, 27421, 29703, 32108, 34638

Offset

1,2

Comments

Row 2 of A211808; see A211790 for a discussion and guide to related sequences.

Links

Table of n, a(n) for n=1..40.

Mathematica

(See the program at A211808.)

Crossrefs

Cf. A211790, A211808.

Sequence in context: A328506 A072333 A055232 * A001210 A264552 A128848

Adjacent sequences: A211803 A211804 A211805 * A211807 A211808 A211809

Keyword

nonn

Author

Clark Kimberling, Apr 22 2012

Status

approved