A080135 a(n+1) = floor( a(n)*sum(k=0..n, 1/a(k)^s) ), where s = sum(k>=0, 1/a(k)^s) and a(0)=1; s = 2.260568736857767...

1, 1, 2, 4, 9, 20, 45, 101, 228, 515, 1164, 2631, 5947, 13443, 30388, 68694, 155287, 351036, 793541, 1793853, 4055128, 9166895, 20722396, 46844400, 105894986, 239382894, 541141486, 1223287525, 2765325535, 6251208451, 14131286391

Offset

0,3

Comments

a(n) ~ c*s^n, c=0.333925961123093...

Links

Table of n, a(n) for n=0..30.

Crossrefs

Sequence in context: A080019 A052534 A213411 * A227978 A206741 A167750

Adjacent sequences: A080132 A080133 A080134 * A080136 A080137 A080138

Keyword

nonn

Author

Paul D. Hanna, Jan 30 2003

Status

approved