A139269 Twice lucky numbers.

2, 6, 14, 18, 26, 30, 42, 50, 62, 66, 74, 86, 98, 102, 126, 134, 138, 146, 150, 158, 174, 186, 198, 210, 222, 230, 254, 258, 266, 270, 282, 302, 318, 326, 338, 342, 378, 386, 390, 402, 410, 422, 438, 446, 462, 470, 474, 482

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Formula

a(n)=A000959(n)*2.

Crossrefs

Cf. A000959.

Sequence in context: A057214 A196445 A280082 * A186299 A163777 A215807

Adjacent sequences: A139266 A139267 A139268 * A139270 A139271 A139272

Keyword

easy,nonn

Author

Omar E. Pol, Jun 01 2008

Status

approved