A symmetrical triangle:q=4;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.
A176469
A symmetrical triangle:q=4;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) =2a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =-8a(12) =-126a(13) =-8a(14) =1a(15) =1a(16) =-103a(17) =-4114a(18) =-4114a(19) =-103a(20) =1a(21) =1a(22) =-642a(23) =-82549a(24) =-353256a(25) =-82549a(26) =-642a(27) =1a(28) =1a(29) =-3281
External references
- oeis: A176469