Numbers n such that max(tau(n),tau(n+1),tau(n+2))- min(tau(n),tau(n+1),tau(n+2)) = 1.

Terms

a(0) =1a(1) =2a(2) =3a(3) =8a(4) =14a(5) =25a(6) =121a(7) =841a(8) =1442a(9) =6241a(10) =8281a(11) =16641a(12) =20164a(13) =24962a(14) =26894a(15) =28561a(16) =46225a(17) =55225a(18) =58564a(19) =65534a(20) =67081a(21) =73441a(22) =93025a(23) =104329a(24) =110888a(25) =116281a(26) =143641a(27) =149768a(28) =155236a(29) =212521