A symmetrical triangle:q=3;c(n,q)=Product[1 - q^i, {i, 1, n}];t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1.
A176468
A symmetrical triangle:q=3;c(n,q)=Product[1 - q^i, {i, 1, n}];t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =11a(8) =11a(9) =1a(10) =1a(11) =37a(12) =101a(13) =37a(14) =1a(15) =1a(16) =117a(17) =473a(18) =473a(19) =117a(20) =1a(21) =1a(22) =359a(23) =-467a(24) =-10331a(25) =-467a(26) =359a(27) =1a(28) =1a(29) =1087
External references
- oeis: A176468