A297127 a(n) = (1/2) * Sum_{|k|<2*sqrt(p)} A297122(4*p-k^2) where p is n-th prime.
33703, 359788, 7410526, 55075448, 823614244, 2238479798, 11171417938, 21787752284, 68501592808, 275166205414, 410273756384, 1185793577918, 2195777500954, 2921567789828, 4984278115408, 10240918233838, 19486182370804, 23813901313094, 41782891225388
Offset: 1
Keywords
Examples
a(2) = (1/2) * (32768 + 2*16807 + 2*512) = 33703. tau(2) = 33703 - 33727 = -24. a(3) = (1/2) * (331776 + 2*161051 + 2*32768 + 2*81) = 359788. tau(3) = 359788 - 359536 = 252.
Links
- Seiichi Manyama, Table of n, a(n) for n = 1..1000
- Olivier Rozier, Ramanujan's tau function