A155106 Numbers k such that both k and k+1 can be expressed as the sum of three distinct nonzero squares in 2 or more ways.

89, 125, 149, 154, 165, 173, 181, 185, 194, 209, 217, 221, 229, 233, 237, 241, 245, 248, 249, 250, 269, 273, 274, 275, 281, 285, 293, 296, 301, 305, 308, 309, 314, 317, 321, 325, 329, 333, 338, 341, 344, 345, 346, 349, 353, 354, 355, 356, 360, 361, 365, 369, 370, 373, 376, 377, 381, 385, 389, 392

Offset: 1

Author

Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 20 2009

Keywords

• nonn
• changed

Examples

			Considering the term 149, 149 = 1^2+2^2+12^2 = 2^2+8^2+9^2 = 6^2+7^2+8^2 and 150 = 1^2+7^2+10^2 = 2^2+5^2+11^2.
		

Crossrefs

Subset of A024804, any A024804(n) is contained in this sequence if A024804(n)+1 = A024804(n+1).

Extensions

Description clarified by Harvey P. Dale, Dec 13 2010