A174137 Partial sums of A006905.

1, 3, 16, 187, 4181, 158484, 9573673, 887796203, 123095499826, 25013843421773, 7332464142932061, 3060854010476035118, 1800064413234246359355, 1477862758280253372432667, 1680717420907850482529235664

Offset: 0

Author

Jonathan Vos Post, Mar 09 2010

Keywords

• nonn

Comments

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

Crossrefs

Cf. A006905, A000595, A001173, A091073.

Formula

a(n) = Sum_{i=0..n} A006905(i).