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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

Alois P. Heinz, Table of n, a(n) for n = 0..13

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

Sequence in context: A096505 A214680 A141802 * A108313 A045966 A146148

Adjacent sequences:  A029843 A029844 A029845 * A029847 A029848 A029849

KEYWORD

easy,nonn

AUTHOR

Don Knuth

EXTENSIONS

More terms from N. J. A. Sloane

STATUS

approved

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Last modified October 20 08:23 EDT 2019. Contains 328253 sequences. (Running on oeis4.)