A049781 a(n) = (b(n) + 1)/2, where b = A000959 (the lucky numbers).

1, 2, 4, 5, 7, 8, 11, 13, 16, 17, 19, 22, 25, 26, 32, 34, 35, 37, 38, 40, 44, 47, 50, 53, 56, 58, 64, 65, 67, 68, 71, 76, 80, 82, 85, 86, 95, 97, 98, 101, 103, 106, 110, 112, 116, 118, 119, 121, 130, 131, 134, 137, 142, 143, 145, 149, 152

Offset

1,2

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

R. K. Guy, Unsolved Problems in Number Theory, Springer, 2004, C3, pp. 164-165.

Eric Weisstein's World of Mathematics, Lucky number.

Wikipedia, Lucky number.

Crossrefs

Cf. A000959.

Sequence in context: A191324 A147807 A022559 * A076697 A001606 A014554

Adjacent sequences: A049778 A049779 A049780 * A049782 A049783 A049784

Keyword

nonn,changed

Author

Clark Kimberling

Status

approved