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A080819 Row sums from triangle in A080818. 4
1, 4, 9, 16, 16, 25, 36, 36, 49, 64, 81, 81, 100, 121, 121, 144, 169, 196, 196, 225, 256, 256, 289, 324, 361, 361, 400, 441, 441, 484, 529, 529, 576, 625, 676, 676, 729, 784, 784, 841, 900, 961, 961, 1024, 1089, 1089, 1156, 1225, 1225, 1296, 1369, 1444, 1444 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..53.

FORMULA

a(n) = (ceiling(sqrt(n*(n+1)/2)))^2. - C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 19 2004

MAPLE

seq((ceil(sqrt(n*(n+1)/2)))^2, n=1..60); # C. Ronaldo

CROSSREFS

Cf. A080817, A080818, A080820.

Sequence in context: A313307 A313308 A248928 * A313309 A313310 A233457

Adjacent sequences:  A080816 A080817 A080818 * A080820 A080821 A080822

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Mar 21 2003

EXTENSIONS

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Dec 19 2004

STATUS

approved

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Last modified September 15 16:44 EDT 2019. Contains 327078 sequences. (Running on oeis4.)