Number of sublattices of index n in generic 7-dimensional lattice.

Terms

a(0) =1a(1) =127a(2) =1093a(3) =10795a(4) =19531a(5) =138811a(6) =137257a(7) =788035a(8) =896260a(9) =2480437a(10) =1948717a(11) =11798935a(12) =5229043a(13) =17431639a(14) =21347383a(15) =53743987a(16) =25646167a(17) =113825020a(18) =49659541a(19) =210837145a(20) =150021901a(21) =247487059a(22) =154764793a(23) =861322255a(24) =317886556a(25) =664088461a(26) =678468820a(27) =1481689315