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A066631 The sequence f(1), f(2), ... as defined in A068192. 2
4, 8, 24, 120, 840, 9240, 120120, 2042040, 38798760, 1202761560, 34880085240, 802241960520, 32891920381320, 1414352576396760, 52331045326680120, 4657463034074530680, 274790319010397310120, 14563886907551057436360 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

PROG

(PARI) {a=4; for(n=1, 18, print1(a, ", "); b=a-precprime(a-2); a=a*b)}

CROSSREFS

Cf. A068192.

Sequence in context: A008950 A045881 A052578 * A090896 A131637 A163143

Adjacent sequences:  A066628 A066629 A066630 * A066632 A066633 A066634

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 10 2002

EXTENSIONS

Edited by Dean Hickerson and Klaus Brockhaus, Jun 10 2002

STATUS

approved

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Last modified October 1 20:14 EDT 2014. Contains 247522 sequences.