First differences of the Poly-Bernoulli numbers B_n^(k) with k=-2 (A027649).

Terms

a(0) =1a(1) =3a(2) =10a(3) =32a(4) =100a(5) =308a(6) =940a(7) =2852a(8) =8620a(9) =25988a(10) =78220a(11) =235172a(12) =706540a(13) =2121668a(14) =6369100a(15) =19115492a(16) =57362860a(17) =172121348a(18) =516429580a(19) =1549419812a(20) =4648521580a(21) =13946089028a(22) =41839315660a(23) =125520044132