nostr:npub1srhg4hk63ew68kepu0znazgf9tdl089dkur5artp440htxqrc8zsqz8g90 nostr:npub17jxdp02k4xkynxme9vccg2c2fk89z3nnzzgzg8era7cmc5qyyyjsgzw2x2 (n^2 + n) / 2 = -1/12 yeah right