login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..33.

FORMULA

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

CROSSREFS

Sequence in context: A308461 A302560 A252970 * A231800 A141725 A279762

Adjacent sequences:  A047670 A047671 A047672 * A047674 A047675 A047676

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 28 09:13 EST 2021. Contains 341695 sequences. (Running on oeis4.)