#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define WTHI(v) {unsigned _z=v,_n=0;long _d=0;while(++_n,_d=_d<<8|0x30|_z%10,_z/=10);*(long*)wp=_d;wp+=_n;}
#define wt(v) if(v>=100000000){WTHI(v/10);*wp++=v%10+'0';}else{WTHI(v);}
#define rep(v,e) for(typeof(e)v=0;v<e;++v)
#define reps(v,s,e) for(typeof(e)v=s;v<e;++v)
#define repst(v,s,e,t) for(typeof(e)v=s;v<e;v+=t)
#define repeat(e) for(typeof(e)_=e;_--;)
#define aaa(x) ({ulong _r=x;_r-(_r<MD?0:MD);})
#define MD 998244353

typedef unsigned long ulong;

unsigned edevs[226];

void mkedevs(){
	repst(i,1,451,2){
		unsigned x=i;
		x*=2-i*x;
		x*=2-i*x;
		x*=2-i*x;
		x*=2-i*x;
		edevs[i>>1]=x;
	}
}

unsigned d[2026][2027];

void mkd(){
	d[0][0]=1;
	reps(i,1,2026){
		d[i][0]=d[i-1][1];
		reps(j,1,i+1){
			d[i][j]=aaa(d[i-1][j-1]+d[i-1][j+1]);
		}
	}
}

int e[451];

void mke(){
	reps(j,1,451){
		e[j]=__builtin_ctz(j);
	}
}

char wbuf[1<<25];

int main(){
	mkedevs();
	mkd();
	mke();
	char*wp=wbuf;
	rd_init();
	repeat(rd()){
		int n=rd();
		int a=rd();
		int m=(a&-a)*2-1;
		ulong z=0;
		for(int j=1;j*j<=a;++j){
			if(j&m){
				int je=e[j];
				int j2=j>>je;
				int a2=a>>je;
				unsigned k=a2*edevs[j2>>1];
				if(k<=a2){
					z+=d[n-1][j];
					if(k>j&&k<n){
						z+=d[n-1][k];
					}
				}
			}
		}
		unsigned v=z%MD;
		wt(v);
		*wp++='\n';
	}
	write(1,wbuf,wp-wbuf);
	_exit(0);
}