A006286 Numbers not of form p + 2^x + 2^y. (Formerly M0925)

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

1,2

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

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.

Crossrefs

Cf. A006285, A156695.

Sequence in context: A180533 A095841 A004865 * A371230 A007608 A010343

Adjacent sequences: A006283 A006284 A006285 * A006287 A006288 A006289

Keyword

nonn

Author

N. J. A. Sloane.

Extensions

More terms from Sean A. Irvine, Feb 22 2017

Status

approved