First differences of A000463.

Terms

a(0) =0a(1) =1a(2) =2a(3) =-1a(4) =6a(5) =-5a(6) =12a(7) =-11a(8) =20a(9) =-19a(10) =30a(11) =-29a(12) =42a(13) =-41a(14) =56a(15) =-55a(16) =72a(17) =-71a(18) =90a(19) =-89a(20) =110a(21) =-109a(22) =132a(23) =-131a(24) =156a(25) =-155a(26) =182a(27) =-181a(28) =210a(29) =-209