A066778 a(n) = Sum_{i=1..n} floor((3/2)^i).

1, 3, 6, 11, 18, 29, 46, 71, 109, 166, 252, 381, 575, 866, 1303, 1959, 2944, 4421, 6637, 9962, 14949, 22430, 33652, 50486, 75737, 113613, 170428, 255650, 383484, 575235, 862861, 1294300, 1941459, 2912198, 4368307, 6552471, 9828717, 14743086

Offset

1,2

Links

Harry J. Smith, Table of n, a(n) for n = 1..300

Prog

(PARI) { s=0; for (n=1, 300, write("b066778.txt", n, " ", s+=floor((3/2)^n)) ) } \\ Harry J. Smith, Mar 24 2010

Crossrefs

Cf. A002379.

Sequence in context: A026905 A286272 A212147 * A265075 A147079 A281572

Adjacent sequences: A066775 A066776 A066777 * A066779 A066780 A066781

Keyword

nonn

Author

Benoit Cloitre, Jan 18 2002

Extensions

Definition corrected by Harry J. Smith, Mar 24 2010

Status

approved