Number of length n 1..(4+1) arrays with every leading partial sum divisible by 2, 3 or 5.

A254823

Number of length n 1..(4+1) arrays with every leading partial sum divisible by 2, 3 or 5.

Terms

    a(0) =4a(1) =16a(2) =54a(3) =166a(4) =500a(5) =1557a(6) =5316a(7) =19292a(8) =69536a(9) =248613a(10) =893091a(11) =3146780a(12) =10584619a(13) =34064054a(14) =108011322a(15) =350399707a(16) =1186298040a(17) =4158109604a(18) =14813200901a(19) =52859389574a(20) =186599450347a(21) =643953634665

External references