Numbers n such that sigma(n) + sigma(n+1) = sigma(n+2) + sigma(n+3).

Terms

a(0) =75a(1) =113a(2) =295a(3) =533a(4) =686a(5) =2130a(6) =14805a(7) =26966a(8) =30235a(9) =35095a(10) =135653a(11) =355675a(12) =432996a(13) =590138a(14) =1214588a(15) =2692853a(16) =2952064a(17) =3375195a(18) =3486795a(19) =5973014a(20) =6880351a(21) =7334956a(22) =22266602a(23) =25841659a(24) =30483834a(25) =37416582a(26) =38390010a(27) =40952513a(28) =41109593a(29) =57242145