|
|
A029846
|
|
a(n) = a(n-1)*b(n-2)+2, b() given by A029758.
|
|
2
|
|
|
1, 3, 5, 7, 23, 347, 109307, 11878938227, 141106591489900388627, 19911070158545297149320104511797515190627, 396450714858513044552818188364610837019759458190194070051140109393414330800390627
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
REFERENCES
|
D. E. Knuth, Art of Computer Programming, Vol. 3, Sect. 6.2.3 (7) and (8).
|
|
LINKS
|
|
|
PROG
|
(PARI) a(n)=if(n<3, max(0, 1+2*n), 2+a(n-1)*(a(n-1)-2)*(a(n-2)-2)/a(n-2)) /* Michael Somos, Feb 07 2004 */
|
|
CROSSREFS
|
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|