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A119672 Number of prime factors (with multiplicity) of n^4 + 3*n^2 + 1 (A057721). 0
0, 1, 1, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1, 2, 3, 3, 3, 1, 2, 3, 1, 2, 2, 1, 2, 2, 2, 2, 3, 2, 1, 3, 1, 1, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 3, 1, 4, 2, 1, 2, 2, 2, 2, 1, 3, 2, 4, 2, 1, 3, 3, 2, 1, 2, 2, 2, 3, 1, 1, 3, 1, 2, 3, 4, 3, 1, 3, 1, 1, 2, 1, 2, 2, 2, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..85.

FORMULA

a(n) = Bigomega(n^4 + 3*n^2 + 1) = A001222(A057721(n)).

MATHEMATICA

Table[PrimeOmega[n^4+3n^2+1], {n, 0, 100}]  (* Harvey P. Dale, Apr 25 2011 *)

CROSSREFS

Cf. A001222, A057721, A120062.

Sequence in context: A020903 A133083 A083921 * A271608 A087740 A029439

Adjacent sequences:  A119669 A119670 A119671 * A119673 A119674 A119675

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post, Jun 11 2006

EXTENSIONS

More terms from Harvey P. Dale, Apr 25 2011.

STATUS

approved

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Last modified June 20 00:16 EDT 2021. Contains 345154 sequences. (Running on oeis4.)