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A094666 Composite NSW numbers. 0
1393, 8119, 47321, 275807, 1607521, 54608393, 318281039, 1855077841, 10812186007, 367296043199, 2140758220993, 12477253282759, 72722761475561, 423859315570607, 2470433131948081, 14398739476117879, 83922003724759193 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..17.

J. A. Sellers, Infinitely Many Composite NSW Numbers: An Inductive Proof

J. A. Sellers and H. Williams, On the Infinitude of Composite NSW Numbers

MATHEMATICA

a[0] = 1; a[1] = 7; a[n_] := a[n] = 6a[n - 1] - a[n - 2]; a /@ Select[ Range[23], !PrimeQ[ a[ # ]] &] (* Robert G. Wilson v, Jun 09 2004 *)

CROSSREFS

Cf. A002315, A088165.

Sequence in context: A202050 A236520 A235657 * A163043 A069366 A163054

Adjacent sequences:  A094663 A094664 A094665 * A094667 A094668 A094669

KEYWORD

nonn

AUTHOR

Lekraj Beedassy, Jun 07 2004

EXTENSIONS

More terms from Robert G. Wilson v, Jun 09 2004

STATUS

approved

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Last modified February 20 04:57 EST 2018. Contains 299358 sequences. (Running on oeis4.)