A137262 Floor of sum of the first 10^n square roots.

1, 22, 671, 21097, 666716, 21082008, 666667166, 21081852648, 666666671666, 21081851083600

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Example

The first 10^0 square roots is 1. The sum of the first 10^1 square roots is 22.468278186... . So 22 is the second entry in the sequence.

Prog

(PARI) /* For this sequence, p = 2 */ g2(n, p) = for(j=0, n, s=0; for(x=0, 10^j, s+=x^(1/p)); print1(floor(s)", "))

Crossrefs

Sequence in context: A218478 A223624 A230836 * A300137 A025760 A229124

Adjacent sequences: A137259 A137260 A137261 * A137263 A137264 A137265

Keyword

nonn

Author

Cino Hilliard, Mar 12 2008

Status

approved