Engel expansion of zeta(4) = Pi^4/90 = Sum_{i>0} 1/i^4.

Terms

a(0) =1a(1) =13a(2) =15a(3) =19a(4) =132a(5) =1474a(6) =1977a(7) =10392a(8) =12992a(9) =44777a(10) =59412a(11) =170685a(12) =217607a(13) =704791a(14) =818133a(15) =1387423a(16) =2208674a(17) =3206215a(18) =12732462a(19) =13962681a(20) =24593168a(21) =39744274a(22) =55804517a(23) =130269696a(24) =426536424a(25) =546807194a(26) =1030799587a(27) =1139987135