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A168311 Numbers that are not sums of two triangular numbers and are not one greater than a sum of two triangular numbers. 0
33, 41, 53, 54, 63, 75, 86, 96, 104, 117, 118, 125, 129, 162, 167, 179, 180, 185, 188, 195, 204, 222, 223, 224, 229, 230, 243, 248, 251, 261, 270, 271, 284, 285, 293, 294, 314, 317, 318, 333, 334, 338, 339, 348, 349, 350, 360, 365, 369, 375, 376, 377, 383 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Number n belongs to this sequence if both n and n-1 belong to A020757.

LINKS

Table of n, a(n) for n=1..53.

CROSSREFS

A020757

Sequence in context: A043929 A180656 A034070 * A045241 A046041 A140151

Adjacent sequences:  A168308 A168309 A168310 * A168312 A168313 A168314

KEYWORD

nonn

AUTHOR

Tanya Khovanova, Nov 22 2009

STATUS

approved

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Last modified September 18 04:44 EDT 2020. Contains 337165 sequences. (Running on oeis4.)