Theta series of 28-dimensional unimodular lattice with no roots and with no parity vector of norm 4.
A002520
Theta series of 28-dimensional unimodular lattice with no roots and with no parity vector of norm 4.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =2240a(4) =98280a(5) =1790208a(6) =19138560a(7) =141920640a(8) =805208040a(9) =3723722240a(10) =14651449344a(11) =50573436480a(12) =156717687840a(13) =443691198720
External references
- oeis: A002520