A077307 Partial sums of theta series of diamond (A005925).

1, 1, 1, 5, 5, 5, 5, 5, 17, 17, 17, 29, 29, 29, 29, 29, 35, 35, 35, 47, 47, 47, 47, 47, 71, 71, 71, 87, 87, 87, 87, 87, 99, 99, 99, 123, 123, 123, 123, 123, 147, 147, 147, 159, 159, 159, 159, 159, 167, 167, 167, 191, 191, 191, 191, 191, 239, 239, 239, 275, 275, 275, 275, 275, 281, 281, 281, 293

Offset: 0

Author

Jonathan Vos Post, Dec 13 2010

Keywords

• nonn

Crossrefs

Cf. A005925.

Formula

a(n) = Sum_{i=0..n} A005925(i).

Extensions

Incorrect a(16)=35 removed by Georg Fischer, Aug 29 2020