A165898 a(n) = sum of the quadratic nonresidues of n.

0, 0, 2, 5, 5, 7, 14, 23, 24, 20, 33, 52, 39, 49, 75, 106, 68, 93, 95, 155, 140, 121, 161, 234, 175, 156, 225, 294, 203, 285, 279, 424, 363, 272, 420, 534, 333, 361, 533, 645, 410, 553, 473, 748, 765, 575, 658, 1004, 686, 700, 867, 1027, 689, 882, 1100, 1288

Offset

1,3

Comments

The table below shows n, the number of quadratic nonresidues (QNRs)

of n (A095972), the sum of the QNRs of n and the QNRs of n (A096013)

for n=1:10.

..n..num QNRs..sum QNRs.........QNRs

..1.........0.........0

..2.........0.........0

..3.........1.........2.........2

..4.........2.........5.........2..3

..5.........2.........5.........2..3

..6.........2.........7.........2..5

..7.........3........14.........3..5..6

..8.........5........23.........2..3..5..6..7

..9.........5........24.........2..3..5..6..8

.10.........4........20.........2..3..7..8

Links

C. H. Gribble, Table of n, a(n) for n=1,...,1000.

Crossrefs

Cf. A096013

Sequence in context: A101858 A329813 A165917 * A194531 A092394 A027438

Adjacent sequences: A165895 A165896 A165897 * A165899 A165900 A165901

Keyword

nonn

Author

Christopher Hunt Gribble, Sep 29 2009

Status

approved