Coordination sequence for sigma-CrFe, Position Xa.

Terms

a(0) =1a(1) =15a(2) =51a(3) =125a(4) =225a(5) =366a(6) =535a(7) =729a(8) =963a(9) =1247a(10) =1522a(11) =1861a(12) =2213a(13) =2601a(14) =3037a(15) =3502a(16) =4011a(17) =4535a(18) =5039a(19) =5693a(20) =6252a(21) =6937a(22) =7669a(23) =8347a(24) =9119a(25) =9918a(26) =10659a(27) =11541a(28) =12421a(29) =13323