a(4n+k) = 4a(4n+k-1)-6a(4n+k-2)+4a(4n+k-3), for k = 0,1,2; 2*a(4n+3) = 7a(4n+2)-8(4n+1)+2a(4n), with a(0) = a(1) = a(2) = 0, a(3) = 1.
A132152
a(4n+k) = 4a(4n+k-1)-6a(4n+k-2)+4a(4n+k-3), for k = 0,1,2; 2*a(4n+3) = 7a(4n+2)-8(4n+1)+2a(4n), with a(0) = a(1) = a(2) = 0, a(3) = 1.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =4a(5) =10a(6) =20a(7) =34a(8) =56a(9) =100a(10) =200a(11) =356a(12) =624a(13) =1160a(14) =2320a(15) =4104a(16) =7136a(17) =13200a(18) =26400a(19) =46736a(20) =81344a(21) =150560a(22) =301120a(23) =533024a(24) =927616a(25) =1716800a(26) =3433600a(27) =6078016a(28) =10577664a(29) =19576960
External references
- oeis: A132152