A006286 Numbers not of form p + 2^x + 2^y.

1, 2, 3, 128, 150, 252, 332, 338, 374, 510, 600, 702, 758, 810, 878, 906, 908, 960, 978, 998, 1020, 1088, 1200, 1208, 1212, 1244, 1260, 1272, 1478, 1530, 1542, 1550, 1590, 1598, 1620, 1650, 1658, 1720, 1760, 1778, 1784, 1808, 1830, 1860, 1868

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• changed

References

• Jeffrey Shallit, personal communication.
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• Sean A. Irvine, Table of n, a(n) for n = 1..1000
• Thomas Bloom, Problem 9, Erdős Problems.
• Roger Crocker, On the sum of a prime and of two powers of two, Pacific J. Math. 36(1): 103-107 (1971).
• Hao Pan, On the integers not of the form {$p+2^a+2^b$},, arXiv:0905.3809 [math.NT], 2009.
• Terence Tao, Erdős problem database, see entry no. 9.

Crossrefs

Cf. A006285, A156695.

Extensions

More terms from Sean A. Irvine, Feb 22 2017