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A112625
Prime numbers that cannot be expressed as a sum of 2 triangular numbers and a power of 2.
1
152539, 175573, 292147, 303337, 437527, 590137, 1115683, 1134961, 1178659, 1205707, 1281751, 1587301, 1597759, 1673209, 1853641, 1898371, 1945243, 1997617, 2139157, 2191429, 2399641, 2417533, 2638747, 2656663, 2744587
OFFSET
1,1
COMMENTS
Sequence proposed by Livio Zucca on newsgroup it.hobby.enigmi. A subset of A112665.
EXAMPLE
The prime 152533 is not in the sequence since it can be expressed as 152533 = T(439) + T(334) + 2^3.
CROSSREFS
Cf. A112665.
Sequence in context: A248691 A086691 A244598 * A118498 A233392 A233947
KEYWORD
nonn
AUTHOR
Giovanni Resta, Jan 12 2006
STATUS
approved