A034030 Imprimitively represented by x^2+2y^2.

0, 4, 8, 9, 12, 16, 18, 24, 25, 27, 32, 36, 44, 48, 49, 50, 54, 64, 68, 72, 75, 76, 81, 88, 96, 98, 99, 100, 108, 121, 128, 132, 136, 144, 147, 150, 152, 153, 162, 164, 169, 171, 172, 176, 192, 196, 198, 200, 204, 216, 225, 228

Offset

1,2

Links

Table of n, a(n) for n=1..52.

Maple

# Maple code for A002479, A057127, A034030-A034034 from N. J. A. Sloane, Apr 30 2015
lis:={}; lisP:={}; lisI:={};
M:=50; M2:=M^2;
for x from 0 to M do
   x2:=x^2;
for y from 0 to M do
   N:=x2+2*y^2;
if N <= M2 then
   if gcd(x, y) = 1 then lisP:={op(lisP), N}; else lisI:={op(lisI), N} fi;
   lis:={op(lis), N};
fi;
od: od:
lprint("lis");
Lis:=sort(convert(lis, list));
lprint("lisP");
LisP:=sort(convert(lisP, list));
lprint("lisI");
LisI:=sort(convert(lisI, list));
lprint("lisPnotI");
LisPnotI:=sort(convert(lisP minus lisI, list));
lprint("lisInotP");
LisInotP:=sort(convert(lisI minus lisP, list));
lprint("lisIandP");
LisIandP:=sort(convert(lisI intersect lisP, list));
lprint("liseither");
Liseither:=sort(convert(lis minus (lisI intersect lisP), list));

Crossrefs

Cf. A002479, A097700, A057127, A034031-A034034.

Sequence in context: A122145 A328014 A359869 * A057109 A369639 A069189

Adjacent sequences: A034027 A034028 A034029 * A034031 A034032 A034033

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

Corrected by N. J. A. Sloane, Apr 30 2015

Status

approved