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A109256 n^6 - 11*n^4 + 36*n^2 - 36. 0
-36, -10, -4, 126, 1820, 9614, 33660, 92966, 219356, 462150, 893564, 1614830, 2763036, 4518686, 7113980, 10841814, 16065500, 23229206, 32869116, 45625310, 62254364, 83642670, 110820476, 144976646, 187474140, 239866214, 303913340 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

COMMENTS

All primes are prime divisors.

REFERENCES

G. Polya and G. Szego, Problems and Theorems in Analysis II (Springer 1924, reprinted 1972), Part Eight, Chap. 2, Sect. 1, Problem 102.

FORMULA

a(n) = (n^2 - 2)*(n^2 - 3)*(n^2 - 6).

PROG

(MAGMA)[n^6 - 11*n^4 + 36*n^2 - 36: n in [0..40]]; [From Vincenzo Librandi, Dec 26 2010]

CROSSREFS

Sequence in context: A181759 A097488 A061046 * A066583 A073405 A056770

Adjacent sequences:  A109253 A109254 A109255 * A109257 A109258 A109259

KEYWORD

sign

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 20 2005

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Last modified February 15 05:45 EST 2012. Contains 205694 sequences.