OFFSET
1,1
MATHEMATICA
c[n_] := Sum[Floor[j*Sqrt[6]], {j, 1, n}];
c = Table[c[n], {n, 1, 90}]
PROG
(Python)
from sympy import integer_nthroot
def A194137(n): return sum(integer_nthroot(6*j**2, 2)[0] for j in range(1, n+1)) # Chai Wah Wu, Mar 17 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Aug 17 2011
STATUS
approved