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A047673 Row 4 of square array defined in A047671. 2
1, 13, 61, 193, 481, 1021, 1933, 3361, 5473, 8461, 12541, 17953, 24961, 33853, 44941, 58561, 75073, 94861, 118333, 145921, 178081, 215293, 258061, 306913, 362401, 425101, 495613, 574561, 662593, 760381, 868621, 988033, 1119361 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

FORMULA

n^4 - 2n^3 + 5n^2 - 4n + 1.

CROSSREFS

Sequence in context: A081589 A139880 A127876 * A141725 A147185 A122885

Adjacent sequences:  A047670 A047671 A047672 * A047674 A047675 A047676

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 14 04:48 EST 2012. Contains 205570 sequences.