A061291 a(1) = 1; a(n+1) = a(1) + a(2)*(a(2) + a(3)*(a(3) +...+a(n-1)*(a(n-1) + a(n))...)).

1, 1, 2, 4, 14, 150, 18406, 311742406, 96402927697811206, 9292975819514867485089851568784006

Offset

1,3

Links

Table of n, a(n) for n=1..10.

Crossrefs

Sequence in context: A067209 A134040 A368017 * A166105 A000370 A326941

Adjacent sequences: A061288 A061289 A061290 * A061292 A061293 A061294

Keyword

easy,nonn

Author

Leroy Quet, Jun 04 2001

Status

approved