A138901 Partial sums of A094837.

1, 3, 7, 17, 41, 87, 187, 412, 937, 2162, 5298, 12354, 29994, 74094, 182994, 444354, 1081419, 2737788, 6745792, 16765802, 41815827, 105943891, 261683475, 655537299, 1668304275

Offset: 1

Author

Jonathan Vos Post, May 16 2008

Keywords

• nonn

Comments

3, 7, 17, 41, 937 and 105943891 are primes.

Examples

			a(12) = 1 + 2 + 4 + 10 + 24 + 46 + 100 + 225 + 525 + 1225 + 3136 + 7056 = 12354.
		

Crossrefs

Cf. A094837.

Extensions

a(4)=17 added and a(13)-a(25) from Akshay Bansal, Jul 08 2017