Let u(1)=u(2)=u(3)=1, u(n+3)=(n*u(n)+(n+1)*u(n+1)+(n+2)*u(n+2))/(n+3); sequence gives values of n such that u(n) is an integer.

A075770

Let u(1)=u(2)=u(3)=1, u(n+3)=(n*u(n)+(n+1)*u(n+1)+(n+2)*u(n+2))/(n+3); sequence gives values of n such that u(n) is an integer.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =10a(4) =14a(5) =350a(6) =702a(7) =817a(8) =1053a(9) =1405a(10) =31426a(11) =44770a(12) =86766a(13) =120118a(14) =216918a(15) =284310a(16) =343278a(17) =347646a(18) =426465a(19) =511758a(20) =767637a(21) =1005030a(22) =1282398a(23) =1483326a(24) =1610510a(25) =1930666a(26) =2434318a(27) =2643990a(28) =2883465a(29) =3345210

External references