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A014793 Squares of odd octagonal numbers. 4
1, 441, 4225, 17689, 50625, 116281, 231361, 416025, 693889, 1092025, 1640961, 2374681, 3330625, 4549689, 6076225, 7958041, 10246401, 12996025, 16265089, 20115225, 24611521, 29822521, 35820225, 42680089, 50481025, 59305401 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..25.

FORMULA

G.f.: (-25*x^4 - 964*x^3 - 2030*x^2 - 436*x - 1)/(x-1)^5. - Maksym Voznyy (voznyy(AT)mail.ru), Aug 11 2009

CROSSREFS

Cf. A000567, A014641, A014642, A014794.

Sequence in context: A057950 A250808 A202400 * A264305 A321337 A206467

Adjacent sequences:  A014790 A014791 A014792 * A014794 A014795 A014796

KEYWORD

nonn

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from Patrick De Geest, Aug 15 2000

STATUS

approved

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Last modified April 22 07:02 EDT 2021. Contains 343162 sequences. (Running on oeis4.)