1,2

Table of n, a(n) for n=1..12.

54, 55, 56, 57, 58 is a run of length 5 in A001221 all with d = 2.

Monotonic subsequence of A048932. Cf. A048972.

Sequence in context: A240811 A118856 A118530 * A299646 A006597 A304294

Adjacent sequences: A048968 A048969 A048970 * A048972 A048973 A048974

more,nonn

N. J. A. Sloane, Enoch Haga

More terms from Sam Handler (sam_5_5_5_0(AT)yahoo.com), Sep 04 2006

approved