Partial sums of the central Delannoy numbers (A001850).

A089165

Partial sums of the central Delannoy numbers (A001850).

Terms

    a(0) =1a(1) =4a(2) =17a(3) =80a(4) =401a(5) =2084a(6) =11073a(7) =59712a(8) =325441a(9) =1788004a(10) =9885457a(11) =54932176a(12) =306528145a(13) =1716461764a(14) =9640310017a(15) =54282691840a(16) =306337928449

External references