A080819 - OEIS

%I #6 Jun 08 2019 16:24:10

%S 1,4,9,16,16,25,36,36,49,64,81,81,100,121,121,144,169,196,196,225,256,

%T 256,289,324,361,361,400,441,441,484,529,529,576,625,676,676,729,784,

%U 784,841,900,961,961,1024,1089,1089,1156,1225,1225,1296,1369,1444,1444

%N Row sums from triangle in A080818.

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

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

%Y Cf. A080817, A080818, A080820.

%K nonn

%O 1,2

%A _Amarnath Murthy_, Mar 21 2003

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