1 2 4 8 16 32 64 128 256 512 sequence
1+2+4+8+16 1+2+4+8 1+2+4+8+16+32+64+128 answer 1+2+4+8+32+64 1+2+4+8+16+128 1+2+4+8+64 1+2+4+8+16+32+64+128 calculator 1+2+4+8+16+64+128 1+2+4+8+16 formula 1+2+4+8+16+32+64 calculator 1 2 4 8 16 32 64 128 256 512 sequence