Theta series of 27-dimensional unimodular lattice with root system A_1 and a parity vector of norm 3.
A002490
Theta series of 27-dimensional unimodular lattice with root system A_1 and a parity vector of norm 3.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =1652a(4) =119550a(5) =1497328a(6) =16733124a(7) =108084480a(8) =588808172a(9) =2544811584a(10) =9516509988a(11) =31328336284a(12) =92876219432a(13) =252846150384a(14) =638250041288
External references
- oeis: A002490