|
| |
|
|
A143764
|
|
a(n+1) = (a(n)+n)^2, a(1) = 1.
|
|
6
| |
|
|
1, 4, 36, 1521, 2325625, 5408554896900, 29252466072845872288372836, 855706771342998810018458679815602502067088579902649, 732234078522259249473123638277942895348884466303559008943210424176413224873174808848983192723595659649
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| Let f(n+1,k) = f(n,k)^2 + k*n*f(n,k) + n^2, f(1, k) = 1:
f(n,0)=A143760(n), f(n,-1)=A143761(n), f(n,+1)=A143762(n),
f(n,-2)=A143763(n), f(n,+2)=a(n), f(n,-3)=A143765(n), f(n,+3)=A143766(n).
|
|
|
LINKS
| Index entries for sequences of form a(n+1)=a(n)^2 + ... [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 11 2008]
|
|
|
MATHEMATICA
| s=1; lst={}; Do[AppendTo[lst, s*=s+=n], {n, 0, 9}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 20 2009]
|
|
|
CROSSREFS
| Subsequence of A000290.
Sequence in context: A136469 A120605 A173212 * A152287 A086857 A174864
Adjacent sequences: A143761 A143762 A143763 * A143765 A143766 A143767
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 01 2008
|
| |
|
|
