Alternating sums of the numbers in sequence A080253.

A217483

Alternating sums of the numbers in sequence A080253.

Terms

    a(0) =1a(1) =2a(2) =15a(3) =132a(4) =1565a(5) =22918a(6) =400939a(7) =8160008a(8) =189453369a(9) =4942271754a(10) =143128015943

External references