A114317 a(n+1) = a(n)^2 + 2*n.

1, 3, 13, 175, 30633, 938380699, 880558336255728613, 775382983549456819927133059506903783, 601218771178057225431491345601197053905427210323124545159875839219711105

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Formula

a(n) = a(n-1)^2 + 2*(n-1).

Prog

(PARI) a(n) = if (n==1, 1, a(n-1)^2 + 2*(n-1)) \\ Michel Marcus, Jun 29 2013

Crossrefs

Sequence in context: A239979 A336204 A261361 * A168320 A323134 A368499

Adjacent sequences: A114314 A114315 A114316 * A114318 A114319 A114320

Keyword

nonn

Author

Rod Edwards (edwards(AT)math.uvic.ca), Feb 05 2006

Status

approved