A080944 Numbers having only trivial divisors that are also suffixes in binary representation.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 52, 53, 55, 56, 57, 58, 59, 61, 62, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 76, 77, 79, 80, 81, 82, 83

Offset

1,2

Comments

A080942(a(n))<=2; union of powers of 2 (A000079) and A080943; complement of A080945.

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Prog

(Haskell)
a080944 n = a080944_list !! (n-1)
a080944_list = filter ((<= 2) . a080942) [1..]
-- Reinhard Zumkeller, Mar 27 2014

Crossrefs

Cf. A007088, A080940, A080941.

Sequence in context: A322901 A322911 A023756 * A321291 A317294 A095736

Adjacent sequences: A080941 A080942 A080943 * A080945 A080946 A080947

Keyword

nonn,base

Author

Reinhard Zumkeller, Feb 25 2003

Status

approved