Number of 5-tuples (v1,v2,v3,v4,v5) of nonnegative integers less than n such that v1 <= v5, v2 <= v5, v2 <= v4 and v3 <= v4.

A085461

Number of 5-tuples (v1,v2,v3,v4,v5) of nonnegative integers less than n such that v1 <= v5, v2 <= v5, v2 <= v4 and v3 <= v4.

Terms

    a(0) =1a(1) =13a(2) =70a(3) =246a(4) =671a(5) =1547a(6) =3164a(7) =5916a(8) =10317a(9) =17017a(10) =26818a(11) =40690a(12) =59787a(13) =85463a(14) =119288a(15) =163064a(16) =218841a(17) =288933a(18) =375934a(19) =482734a(20) =612535a(21) =768867a(22) =955604a(23) =1176980a(24) =1437605a(25) =1742481a(26) =2097018a(27) =2507050a(28) =2978851a(29) =3519151

External references