A032516 Sum of the integer part of 7/2-th roots of integers less than n.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 84, 87, 90, 93, 96, 99, 102, 105, 108, 111, 114, 117, 120, 123, 126, 129, 132, 135, 138, 141

Offset: 0

Author

Michel Tixier (tixier(AT)dyadel.net)

Keywords

• nonn

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..1000

Programs

Mathematica

Accumulate[Floor[Surd[Range[0,70]^2,7]]] (* Harvey P. Dale, Mar 21 2020 *)