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A174137 Partial sums of A006905. 0
1, 3, 16, 187, 4181, 158484, 9573673, 887796203, 123095499826, 25013843421773, 7332464142932061, 3060854010476035118, 1800064413234246359355, 1477862758280253372432667, 1680717420907850482529235664 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Partial sums of number of transitive relations on n labeled nodes. After 3, none of the values shown is prime.

LINKS

Table of n, a(n) for n=0..14.

FORMULA

a(n) = SUM[i=0..n] A006905(i).

CROSSREFS

Cf. A006905, A000595, A001173, A091073.

Sequence in context: A192668 A045990 A007006 * A166860 A196562 A317073

Adjacent sequences:  A174134 A174135 A174136 * A174138 A174139 A174140

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, Mar 09 2010

STATUS

approved

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Last modified February 24 02:48 EST 2020. Contains 332195 sequences. (Running on oeis4.)