a(n) = numerator(r(n)) where r(n) = (((1/2)*(sqrt(3) + 1))^n - ((1/2)*(sqrt(3) - 1))^n * cos(Pi*n))/sqrt(3).
A305491
a(n) = numerator(r(n)) where r(n) = (((1/2)*(sqrt(3) + 1))^n - ((1/2)*(sqrt(3) - 1))^n * cos(Pi*n))/sqrt(3).
Terms
- a(0) =0a(1) =1a(2) =1a(3) =3a(4) =2a(5) =11a(6) =15a(7) =41a(8) =7a(9) =153a(10) =209a(11) =571a(12) =195a(13) =2131a(14) =2911a(15) =7953a(16) =679a(17) =29681a(18) =40545a(19) =110771a(20) =37829a(21) =413403a(22) =564719a(23) =1542841a(24) =263445a(25) =5757961a(26) =7865521a(27) =21489003a(28) =7338631a(29) =80198051
External references
- oeis: A305491