cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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

Original entry on oeis.org

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

Views

Author

Henry Bottomley, Jun 25 2001

Keywords

Crossrefs

Complement of A062861. Cf. A062862.

Programs

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