Theta series of 23-dimensional shorter Leech lattice.

Terms

a(0) =1a(1) =0a(2) =0a(3) =4600a(4) =93150a(5) =953856a(6) =6476800a(7) =32788800a(8) =133204500a(9) =458086400a(10) =1384998912a(11) =3771829800a(12) =9403968600a(13) =21771763200a(14) =47406643200a(15) =97917423808a(16) =192825064350a(17) =364086835200a(18) =663509299200