A163862 a(n) = A170907(2^n).

1, 4, 13, 47, 176, 678, 2658, 10521, 41860, 166995, 667100, 2666651, 10663099, 42645332

Offset

0,2

Comments

This sequence determines the "lim sup" of the growth of A151723.

Links

Table of n, a(n) for n=0..13.

Formula

It appears that a(n)/4^n converges to a constant c which is roughly 0.635.

Crossrefs

Cf. A151723, A170907.

Sequence in context: A017944 A017945 A055451 * A149440 A149441 A149442

Adjacent sequences: A163859 A163860 A163861 * A163863 A163864 A163865

Keyword

nonn,more

Author

N. J. A. Sloane, May 11 2010

Extensions

a(8) onwards from David Applegate, May 12 2010

Status

approved