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A098365 Sums of two squares and divisible by 17. 5
17, 34, 68, 85, 136, 153, 170, 221, 272, 289, 306, 340, 425, 442, 493, 544, 578, 612, 629, 680, 697, 765, 833, 850, 884, 901, 986, 1037, 1088, 1105, 1156, 1224, 1241, 1258, 1360, 1377, 1394, 1445, 1513, 1530, 1649, 1666, 1700, 1717, 1768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

EXAMPLE

Sums not divisible by 17 are indicated by asterisks:

....|...1....4....9...16....25....36....49....64....81...100...121

------------------------------------------------------------------

1...|...*....*....*...17.....*.....*.....*.....*.....*.....*.....*

4...|...*....*....*....*.....*.....*.....*....68....85.....*.....*

9...|...*....*....*....*....34.....*.....*.....*.....*.....*.....*

16..|..17....*....*....*.....*.....*.....*.....*.....*.....*.....*

25..|...*....*...34....*.....*.....*.....*.....*.....*.....*.....*

36..|...*....*....*....*.....*.....*....85.....*.....*...136.....*

49..|...*....*....*....*.....*....85.....*.....*.....*.....*...170

64..|...*...68....*....*.....*.....*.....*.....*.....*.....*.....*

81..|...*...85....*....*.....*.....*.....*.....*.....*.....*.....*

100.|...*....*....*....*.....*...136.....*.....*.....*.....*...221

121.|...*....*....*....*.....*.....*...170.....*.....*...221.....*

MATHEMATICA

ssq[upto_]:=Module[{max=Floor[Sqrt[upto]], seq}, seq=Select[Union[ Total/@Tuples[ Range[max]^2, {2}]], Divisible[#, 17]&]; Select[seq, #<=upto&]]; ssq[1800]  (* Harvey P. Dale, Mar 24 2011 *)

CROSSREFS

Sequence in context: A188290 A268287 A249988 * A033899 A110287 A102813

Adjacent sequences:  A098362 A098363 A098364 * A098366 A098367 A098368

KEYWORD

nonn

AUTHOR

Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Oct 26 2004

STATUS

approved

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Last modified March 19 11:10 EDT 2019. Contains 321329 sequences. (Running on oeis4.)