A087791 Indices n such that S^n(1) is an integer where S(x) = 3/2*ceiling(x).

0, 2, 5, 6, 7, 10, 12, 13, 16, 18, 20, 21, 24, 26, 27, 29, 31, 32, 33, 34, 35, 38, 40, 41, 42, 43, 44, 45, 46, 48, 54, 55, 58, 60, 63, 65, 67, 68, 70, 71, 76, 79, 86, 88, 89, 90, 91, 92, 95, 98, 100, 103, 104, 106, 107, 112, 113, 114, 117, 118, 119, 123, 128, 130, 131, 133

Offset

0,2

Links

Table of n, a(n) for n=0..65.

Formula

Conjecture : a(n)=2n+O(sqrt(n))

Crossrefs

Cf. A005187.

Sequence in context: A359375 A286751 A293278 * A334880 A285032 A002157

Adjacent sequences: A087788 A087789 A087790 * A087792 A087793 A087794

Keyword

nonn

Author

Benoit Cloitre, Oct 07 2003

Status

approved