1/4 the number of arrangements of 5 nonzero numbers x(i) in -n..n with the sum of sign(x(i))*(|x(i)| mod x(i+1)) equal to zero.

A189954

1/4 the number of arrangements of 5 nonzero numbers x(i) in -n..n with the sum of sign(x(i))*(|x(i)| mod x(i+1)) equal to zero.

Terms

    a(0) =8a(1) =72a(2) =384a(3) =1246a(4) =3247a(5) =6733a(6) =13034a(7) =22220a(8) =36293a(9) =55724a(10) =82485a(11) =116630a(12) =162360a(13) =219198a(14) =290165a(15) =376419a(16) =481243a(17) =606253a(18) =754108a(19) =927521a(20) =1130575a(21) =1364106a(22) =1631281a(23) =1935163a(24) =2280562a(25) =2673957a(26) =3110403a(27) =3602734a(28) =4147102a(29) =4757233

External references