A062863 Numbers which cannot be written as sums of squares of consecutive numbers (even allowing squares of negative numbers).

3, 7, 8, 11, 12, 17, 18, 20, 21, 22, 23, 24, 26, 27, 32, 33, 34, 37, 38, 39, 40, 42, 43, 45, 46, 47, 48, 51, 52, 53, 57, 58, 59, 62, 63, 65, 66, 67, 68, 70, 71, 72, 73, 74, 75, 76, 78, 79, 80, 82, 83, 84, 87, 88, 89, 93, 94, 95, 97, 98, 99, 101, 102, 103, 104, 106, 107, 108

Offset

0,1

Links

Table of n, a(n) for n=0..67.

Index entries for sequences related to sums of squares

Mathematica

Complement[Range[150], Union[Flatten[Table[Union[Total/@(Partition[ Range[-50, 50], i, 1]^2)], {i, 20}]]]] (* Harvey P. Dale, Jan 04 2012 *)

Crossrefs

Complement of A062861. Cf. A062862.

Sequence in context: A285164 A106753 A174871 * A194470 A078466 A047528

Adjacent sequences: A062860 A062861 A062862 * A062864 A062865 A062866

Keyword

nonn

Author

Henry Bottomley, Jun 25 2001

Status

approved