The sieve of Sundaram

Sieve. For $n=1,2,\ldots,N$, remove numbers of the form $2ij+i+j$ with $i,j\ge1$. The remaining $n$ give primes $2n+1$.

Compute up to $30$. $N=14$ (so $2N+1=29$). Removed numbers: $2ij+i+j$: $4,7,10,12,13,16,17,19,22,24,25,27,28,31,\ldots$ (within range $1$–$14$: $4,7,10,12,13$). Remaining $n$ in $1$–$14$: $1,2,3,5,6,8,9,11,14$. Primes: $2\cdot1+1=3$, $5$, $7$, $11$, $13$, $17$, $19$, $23$, $29$.

Conclusion. Sieve gives odd primes up to $30$.