Number of ordered quadruples (i,j,k,l) in range [0..n] satisfying i == j (mod 2), j == k (mod 3) and k == l (mod 4).
A115523
Number of ordered quadruples (i,j,k,l) in range [0..n] satisfying i == j (mod 2), j == k (mod 3) and k == l (mod 4).
Terms
- a(0) =1a(1) =2a(2) =5a(3) =12a(4) =33a(5) =60a(6) =111a(7) =176a(8) =287a(9) =440a(10) =637a(11) =864a(12) =1237a(13) =1652a(14) =2147a(15) =2752a(16) =3555a(17) =4428a(18) =5517a(19) =6700a(20) =8177a(21) =9878a(22) =11785a(23) =13824a(24) =16441a(25) =19214a(26) =22265a(27) =25676a(28) =29685a(29) =33900
External references
- oeis: A115523