A055075 Numbers expressible as the sum of no more than 5 squares of composite numbers, allowing repetitions.

16, 32, 36, 48, 52, 64, 68, 72, 80, 81, 84, 88, 96, 97, 100, 104, 108, 112, 113, 116, 117, 120, 124, 128, 129, 132, 133, 136, 140, 144, 145, 148, 149, 152, 153, 160, 161, 162, 164, 165, 168, 169, 172, 176, 177, 178, 180, 181, 184, 185, 188, 189, 192, 193

Offset: 1

Author

Jud McCranie, Jun 19 2000; corrected Jul 04 2000

Keywords

• nonn

Comments

1167 is the largest of the 256 positive integers not in the sequence.

Examples

			52=4^2+6^2, so 52 is in the sequence.
		

References

• R. K. Guy, Unsolved Problems In Number Theory, section C20.

Links

• R. G. E. Pinch, L. E. Mattics and Emil Grosswald, Solutions to E3262, Amer. Math. Monthly, 97 (No. 3, 1990), 240-242.

Crossrefs

Cf. A002808 (composite numbers).