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A076541 a(n) = Sum_{k=1..n} C(n,k) mod k. 3
0, 1, 2, 2, 3, 8, 9, 11, 6, 13, 14, 26, 27, 28, 32, 46, 47, 49, 50, 68, 81, 82, 83, 116, 102, 101, 105, 105, 106, 142, 143, 143, 153, 172, 165, 222, 223, 216, 259, 278, 279, 256, 257, 327, 394, 295, 296, 422, 374, 318, 328, 384, 385, 420, 469, 461, 465, 450, 451 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Paolo P. Lava, Table of n, a(n) for n = 1..2500

FORMULA

a(n) seems to be asymptotic to c*n^2 with c around 0.18...

PROG

(PARI) a(n)=sum(k=1, n, binomial(n, k)%k)

CROSSREFS

Row sums of A081371.

Sequence in context: A319860 A300354 A091681 * A227380 A159789 A153932

Adjacent sequences:  A076538 A076539 A076540 * A076542 A076543 A076544

KEYWORD

nonn

AUTHOR

Benoit Cloitre, Oct 19 2002

STATUS

approved

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Last modified November 14 15:00 EST 2018. Contains 317208 sequences. (Running on oeis4.)