a(n) is the genus of the modular curve associated to the principal congruence subgroup of level p(n), where p(n) is the n-th prime number.

A191590

a(n) is the genus of the modular curve associated to the principal congruence subgroup of level p(n), where p(n) is the n-th prime number.

Terms

    a(0) =0a(1) =0a(2) =3a(3) =26a(4) =50a(5) =133a(6) =196a(7) =375a(8) =806a(9) =1001a(10) =1768a(11) =2451a(12) =2850a(13) =3773a(14) =5500a(15) =7686a(16) =8526a(17) =11408a(18) =13651a(19) =14875a(20) =18981a(21) =22100a(22) =27391a(23) =35673a(24) =40376a(25) =42875a(26) =48178a(27) =50986a(28) =56925a(29) =81313

External references